Our Coaches

A passionate team of voice experts who love helping people find their voice - and use it powerfully

Our Coaches

Jenni Steck - Voice & Speech Coaching

Jenni Steck, MFA, MS, CCC-SLP

Head Coach & Founder

Jenni is a speech-language pathologist specializing in voice development. With a background in vocal health and theater performance, she blends medical expertise with years of coaching actors, executives, and public speakers. Her approach focuses on building authentic connections through dynamic communication and impactful delivery.

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Jenni Steck is a speech-language pathologist with specialized expertise in developing the speaking voice for professional impact. As the founder of Jenni Steck Voice & Speech Services, she has spent over a decade training broadcast talent for CNN, ESPN, CBS, and ABC, while coaching executives from major companies including Cisco, JP Morgan Chase, AT&T, and PepsiCo. She has also developed keynote addresses and NFL and MLB Hall of Fame acceptance speeches.

Her unique approach combines medical knowledge of vocal health with years of theater performance experience, allowing her to address both the technical and expressive aspects of communication. Jenni helps clients cultivate ease and confidence in their delivery while projecting authority and approachability—whether they’re speaking in the boardroom, on stage, or in front of cameras.

Jenni believes that effective communication is about more than just words—it’s about connection. She works with professionals to identify unconscious signals they send through physicality and vocal presence, then refines their delivery to ensure their message lands with impact. Her clients learn to communicate authentically while building the skills and consistency that increase confidence over time.

With her background in both speech-language pathology and performance, Jenni brings a comprehensive understanding of how voice, body, and message work together to create communication that builds trust, impact, and influence.

Specialties
  • Public Speaking
  • Executive Presence
  • Speech Preparation
  • Accent Reduction
  • Voice and Speech Therapy
  • Vocal Health
  • Presentation Coaching
"The secret of getting ahead is getting started." — Mark Twain
Stefan Novinski - Public Speaking and Presentation Coach

Stefan Novinski, MFA

Public Speaking and Presentation Coach

Stefan Novinski is a nationally recognized theatre director and communication coach who brings the craft of performance to executive leadership. As Director of Training for the Center for Rhetoric and Public Speaking at the University of Dallas, he helps leaders strengthen presence, storytelling, and delivery in high-stakes settings.

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In addition to his work at the University of Dallas, Stefan previously served as Chair of the Drama Department, combining academic leadership with a professional directing career spanning Tony Award-winning theaters across southern California. His directing credits include collaborations with acclaimed actors such as Emma Stone, Tessa Thompson, Ricardo Chavira, and Dan Castellaneta.

Stefan’s background also includes consulting for Disney Creative Entertainment, where he developed Broadway-scale projects, including Toy Story the Musical, in close collaboration with John Lasseter. This experience in large-scale, high-pressure storytelling continues to inform his coaching approach.

A frequent guest speaker for the Gupta College of Business, Stefan works with MBA candidates on cultivating authentic leadership presence through public speaking. He understands that the principles that make theatre compelling, presence, timing, vulnerability, and connection, are the same principles that drive effective business communication.

Through his coaching, Stefan helps executives and professionals move beyond scripted delivery to communicate with clarity, confidence, and authenticity, building influence and inspiring action in every room they enter.

Specialties
  • Leadership Presence
  • Public Speaking
  • Performance Coaching
  • Authentic Communication
  • Executive Presentation Skills
  • Storytelling Techniques
  • Bilingual coaching in Spanish
Jessica Turner, Dallas Voice Coach

Jessica D. Turner, MFA

Accent Specialist & Public Speaking Coach

Jessica is a professional actor and voice-over artist with over 20 years of experience as a speech coach and accent specialist. She helps motivated clients navigate communication across cultures and professional spaces. Jessica creates a non-judgmental, dedicated environment where clients develop clarity, confidence, and presence in their voice.

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Jessica D. Turner is a professional actor, voice-over artist, and speech coach with over two decades of experience helping clients find their authentic voice. As an accent specialist and public speaking coach, she works with highly motivated adults and adolescents who want to communicate with clarity, confidence, and impact across cultures and professional environments.

Jessica believes that your voice tells your story—and she’s dedicated to helping you tell it well. Her approach combines technical expertise in accent modification with a deep understanding of the cultural and professional challenges her clients face. Whether working with international professionals refining their American English pronunciation, executives preparing for high-stakes presentations, or young people building communication confidence, Jessica creates a supportive, non-judgmental space for growth.

With her background in performance and voice-over work, Jessica brings a nuanced ear for vocal quality, articulation, and expression. She understands how small adjustments in pronunciation, rhythm, and delivery can dramatically shift how someone is perceived and heard. Her clients learn not just to speak more clearly, but to communicate with the presence and confidence that opens doors professionally and personally.

Jessica’s coaching is rooted in patience, precision, and a genuine commitment to helping each client reach their communication goals in an environment where they feel supported every step of the way.

Specialties
  • Accent Reduction
  • Public Speaking
  • Executive Presence
  • Confident Communication
  • Speech Preparation
  • Voice-Over Coaching
“In a safe and supportive space, I empower my clients to be heard, to grow in confidence, and to lead with ease.

Jason Hall, MS, CCC-SLP

Communication & Vocal Health Coach

Jason is a licensed speech-language pathologist and author of A Vocal Owner's Manual. He coaches speakers, media personalities, and leaders to strengthen their voice and communicate with confidence. Jason blends vocal health expertise with practical coaching to help clients sound authentic, clear, and connected.

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Jason Hall is a licensed speech-language pathologist, author, and communication coach who specializes in vocal health and confident delivery. As the author of A Vocal Owner’s Manual, he brings deep expertise in voice restoration and prevention, helping clients understand and care for their most important professional tool—their voice.

Jason works with speakers, media personalities, and leaders who rely on their voice daily and need it to perform at its best. Whether addressing vocal fatigue, hoarseness, or strain, or simply wanting to communicate with greater clarity and impact, his clients benefit from a blend of clinical knowledge and practical coaching. He understands the anatomy and physiology of the voice while also knowing how to translate that expertise into actionable strategies that work in real-world settings.

His approach is grounded in helping clients face their communication challenges head-on, then building sustainable techniques for long-term vocal health and confident expression. Jason believes that effective communication starts with a healthy, resilient voice—and that with the right tools and guidance, anyone can sound authentic, clear, and connected.

From executives preparing for high-stakes presentations to professionals recovering from vocal strain, Jason provides the expertise and support needed to communicate with strength, clarity, and confidence that lasts.

Specialties
  • Vocal Health and Restoration
  • Public Speaking
  • Speech Preparation
  • Confident Communication
  • Voice Therapy
  • Media Training
"Not everything that is faced can be changed, but nothing can be changed until it is faced." — James Baldwin

Erin Ashcroft, BFA

Voice & Presentation Coach

Erin brings extensive theater, film, and voice-over experience to her coaching practice. With a BFA from Southern Methodist University and years performing across regional theaters and on screen, she helps clients discover the full power of their voice. Her nonprofit board experience adds insight into impactful presentations and confident leadership communication.

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Erin Ashcroft is a voice and presentation coach with a rich background in performance and public speaking. With a BFA in Theatre from Southern Methodist University and membership in SAG/AFTRA since 2000, she has worked extensively in regional theaters across Dallas, Minnesota, Austin, and Los Angeles. Her career expanded into film, television, voice-over, and commercial work in Miami, giving her a comprehensive understanding of how to deliver impactful performances across mediums.

Now based in Austin, Texas, Erin combines her performance expertise with real-world leadership experience. As a board member of several nonprofits, she has delivered large-scale presentations and moderated discussions with diverse groups including authors, panelists, stakeholders, and community members. This unique blend of stage presence and boardroom confidence allows her to help clients navigate both the technical and emotional aspects of communication.

Erin specializes in helping professionals manage presentation anxiety, develop authentic executive presence, and communicate with clarity and impact. She understands that finding your voice is about more than technique—it’s about confidence, authenticity, and connection. Whether clients are preparing for high-stakes presentations, looking to strengthen their leadership presence, or simply want to feel more comfortable speaking up, Erin provides supportive, practical coaching that helps them discover and harness the full power of their voice.

Specialties
  • Public Speaking
  • Executive Presence
  • Confident Communication
  • Managing Nerves
  • Voice-Over Coaching
  • Presentation Delivery
"There's power in allowing yourself to be known and heard, in owning your unique story, in using your authentic voice." — Michelle Obama
Shaina Chadwick - Client Services & Marketing

Shaina Chadwick

Client Services, Marketing & Communications Coordinator

Shaina is the friendly first point of contact for clients at Jenni Steck Voice & Speech Services. She manages scheduling, client onboarding, and communications with care and efficiency. A former Dallas Cowboys Cheerleader, Shaina brings energy, warmth, and organizational excellence to ensure every client feels supported throughout their journey.

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Shaina Chadwick is the heart of client experience at Jenni Steck Voice & Speech Services. As the first point of contact, she ensures every client feels welcomed, supported, and connected from their initial inquiry through their entire training journey. Shaina manages scheduling, client onboarding, and day-to-day communications with a level of care and efficiency that sets the tone for exceptional service.

Beyond client services, Shaina oversees social media management and content creation, helping expand the company’s reach and amplify its voice online. She also serves as a marketing and sales representative, building meaningful relationships and connecting clients with the coaches and programs best suited to their unique needs and goals.

A former Dallas Cowboys Cheerleader, Shaina brings a distinctive background in performance, discipline, and presence that informs her professional approach today. She understands what it takes to show up with confidence and poise—and she brings that same energy to every client interaction and behind-the-scenes detail.

Her combination of organizational skills, warmth, and attention to detail makes her an essential part of the team. Whether coordinating logistics, answering questions, or ensuring clients feel heard and valued, Shaina creates positive experiences that reflect the Jenni Steck commitment to connection and excellence.

Specialties
  • Client Communication and Support
  • Scheduling and Coordination
  • Social Media Management
  • Content Creation
  • Marketing and Sales Representation
  • Building Positive Client Experiences
"Clear communication begins with connection—and that's where I come in."