Audition

I'm really nervous about my audition! i dont know why. like everyone is saying, "John, you got a lead last year so dont worry" but #1 im not so worryied about that, just aboUT auditioning for some reason? and #2 I feel the only reason i got a lead last year is because Mr.Roth felt i was a very good character fit... not because im this amazing actor boy, i just made a good marius, and even with that i feel like i let him down. And in the play we do this year i may not fit any of the characters, and even though i feel every one last year did a good job including myself, i feel like i didnt live up to MrRoth's expectations? i dont really think im that talented, especially compared to Brian, and Joey. But i dont care about casting, well i do, i want a nice part, that i like and enjoy (so far ive never not been the role ive wanted or the charcter i liked the most in a show(of that gender). except for mabye Annie i liked Rooster more than Daddy Warbucks, but that was middle schol, and then all i cared about was getting the lead).. BUT IM REALLY MORE NERVOUS ABOUT MY AUDITION ITSELF THAN ALL THE STUFF THAT COMES AFTER IT?