Know how to sight-read, always practice with a metronome, have good technique (no space in the right-hand between first and second finger, keep all your fingers on the stick...even during the fast stuff :-), left hand make sure you aren't "holding a cup of tea") everybody is going to go to an audition with some hands...who makes the line is who can adjust to what is going on around them...just my two cents for you man...you might see me there