Now, try this little exercise. Do this: Place your thumb and index finger on the back of your hand. Press down and pull the palms apart as if you are stretching the outside of the back of your hand from between those two palms. Now, put the clarinet mouthpiece for your mouth, anchor your lower lip with the reed, close the mouth off across the mouthpiece and flatten or point the chin. If you are flattening accurately, the skin between your lower lip and chin should stretch or “firm up” just like the skin on the back of your hand stretched by the hands. Clarinet is held too high. This angle of clarinet impacts embouchure poorly. Between a 30 and 40 degree angle is usually approved as accurate. You can test this by listening for your sound as you move the clarinet around. Try this: set your embouchure, move the bell of the clarinet too high. Blow.