Because of the braces everyone has told me that i should use less less mouthpiece pressure and i have litteraly tried everything. From holding the trumpet in the palm of my left hand when playing to hanging the trumpet from the celing and none of it is helping. I cant hit as high but when i do i pinch and the note is way out of tune. Also i dont understand ant of this blow faster air stuff, when i try to blow faster thenotestays the same it just gets louder. Please help.