So, during my high school marching band sectional, my band director noticing that I occasionally puff my cheeks out. I say 'well, I've done it forever' "oh, well i've never seen you do it" "well I do it all the time" "well quit it... easy enough" ...problem is, its not so easy. I've been playing trumpet for 6 years and was never corrected. Besides that thinking about my cheeks all the time takes my mind off of the music and tone, making jumps between notes far apart on the staff or getting up to the high notes is very difficult and fatiguing (on both my cheeks and my embochure). My question is, seeing as how I've been doing great without worrying about whether my cheeks are puffy (I made 1st chair for the district band and have a good shot at all-state), should I work hard to fix this? Would it be too flattering to think if Louis armstrong could puff his cheeks, I can puff mine? Also, seeing a few posts on here regarding 'smiling' to get high, is this the same thing as pulling the corners of my lips back? or is this the right way? Thanks a bunch.