
When I play in front of (no offense, not trying to be immature) my evil band teacher, my tone always become thin and diffused.
When I play at lessons, my tone actually sounds better than practice.
When I have just a teeny perfectionist thinking, my tone becomes sounds slightly forced.
When I first play on the flute, my tone sounds not focused but everything evens out after playing tone exercises...

Is there are reason why my tone never stays at one level? (sorry for all those spaces)