Flutter Tongue Tips - Part 4

I work with private students on these issues every day. Case in point... a student yesterday... when he started, the single note was there (4 draw for example with holes 1-3 covered), but as soon as he started the flutter movement his tongue would migrate to the center and create an octave flutter (tongue now covering 2-3, leaving holes 1 and 4 open). This is still a nice sound, but a different sound.

If you have this same issue, open your mouth, place your finder in front of the left side of your mouth (like you're saying "shhh" when you're trying to shush somebody, but with your finger all the way to the left side). Now aim your tongue to hit your finger, just like in a slap where your tongue is placed to the left side of your mouth to cover the left three holes in your slap embouchure. Start your flutter motion (which is the same as a slap many times over)... your goal is to have your tongue hit your finger each time.