This video provides great step by step instruction on how to form the clarinet embouchure correctly, and gives steps to fix the most common reed, embouchure and sound quality issues.
The second of 3 videos, Michelle Anderson talks about the altissimo range on the clarinet, and give exercises to help work the air, embouchure and sound quality of the instrument.
Part 1 or a 3 part video series on playing the upper notes correctly on the clarinet. This video start with "above the break" notes and addresses fingers, airstream, embouchure and good sound production.
The 3rd of a 3 part series by Michelle Anderson on playing higher clarinet notes. This final video instructs on airstream and finger tricks to improve altissimo range.