Avoid panic: be who you really are, which requires you to be comfortable with yourself. Confident, sure, but not arrogant.

Impress them: be who you really are, which requires you to be comfortable with yourself. Confident, sure, but not arrogant.

Somehow convey that you are a team player and not a prima-dona

My experience with bands is that they are a two way street. You need to be as comfortable with them as they with you. This generally fleshes out over time.

Good luck! I'm sure you'll do well!

Ed