I’ve been asked many times what a “proper” or “perfect” embouchure should look like. The answer is simple: There is no one right way to play the flute.
Go to Larry Krantz’s website where you will see 18 pictures of the lips of professional flutists. (http://www.larrykrantz.com/embpic.htm)
A quick glance of the pictures will show you that there is a wide variation of embouchure formation. Some are off-center. Some of the lips show a pronounced “teardrop” in the middle.
The “teardrop” is a natural feature of some lips. I’ve heard of beginning band directors who will not allow students with a “teardrop” lip to begin playing the flute. That is absolutely ridiculous!
Early in my teaching career, I was interviewed for a book (Sign Me Up!). I talked to the author about how I felt that a child’s interest and enthusiasm were much more important than their physical traits. I still feel that way after 20+ years of teaching.