the best resource is a Certified Estill Master Teacher (EMT). Why? Because EVM is proprioceptive—you cannot learn false fold retraction from a PDF alone. You need a coach to say, "That’s not twang, that’s nasality. Let’s lift the soft palate."
Download the free charts and summaries (many are legal). Use them to understand the theory . Then, invest in a single lesson with an EMT to feel the translation in your own body. Your voice will thank you. Do you have a favorite Estill voice quality (Twang? Sob? Belt?)? Let me know in the comments—I’d love to hear how you use the model in your own practice. the estill voice model theory and translation book pdf
And that is precisely where the Estill Voice Model (EVM) changes everything. the best resource is a Certified Estill Master Teacher (EMT)