My Teaching Philosophy:
I don't have a singular conceptual philosophy to sell you on, other than that I know a lot about pronunciation and accents, and I can help you with yours.
I've seen other accent coaches attempting to boil the American accent down to just one or two overarching concepts:
"It's all about prosody".
"It's all about voice placement and breath".
"It's all about mastering the vowel sounds".
"It's all about mouth posture".
I've learned from all of these concepts. And they all have value. But I don't subscribe to any one of them in particular, as "the key" to attaining the American accent.
I'm self-taught in this field. And while I've learned a lot through research and exploration, I've also learned a ton through the process of accent coaching itself---due to being confronted on a daily basis, with the accent struggles of people from all around the world.
As a good coach and instructor, it's my job to comprehend and process all the little details that go into the vocal production of the American accent; and to provide you with what's most important for the improvement of your own accent. Presenting it all to you in an easily digestible way.
That's essentially what I do.
But to give you some more specifics--and to give you a better idea of what it is that I actually do--here's a list of things that I end up working with students on, on a fairly frequent basis:
The Short i sound, and varying techniques for how to prevent it from sounding like a Long E.
(There are multiple ways to produce almost every sound in Standard American English)
Reducing vowels in function words. An important element in North American prosody.
The Flap T, Stop T, and other Stop consonants, which also play a large role in speaking with a more native-like prosody.
The Dark L, and experimenting with a wide array of techniques for correctly producing this challenging sound.
The Schwa sound: as the essence of the general North American mouth posture.
Pitch issues. There are a variety of them.
Distinguishing between British and American vowel sounds (a lot of non-natives learn British vowel sounds in school, without realizing it).
Experimenting with various tongue positions for producing the TH sound. As well as the soft TH in function words, and the Stop TH.
The many complexities of the R and the L sounds.
Comprehending the difference, and correctly producing minimal vowel pairs.
Practicing priority sounds/elements with my long-term students, and giving them feedback.