E is for EMBOUCHURE! This fancy French word refers to the way you hold your mouth around the mouthpiece:
1) lower lip over bottom teeth
2) firm corners of mouth
3) chin stretched downward
4) top of mouthpiece directly on upper teeth
5) think: “whee!” then “too!”, seal mouth/lips around mouthpiece.
Be sure to keep chin flat. DO NOT puff your cheeks. Note the angle of clarinet and amount of mouthpiece in mouth as well. Questions? Ask away!