continue to sing, and sing better

I have always loved to sign, but this year I am going to college as a Theatre major. I have never been in a musical, but there is this one show…Once Upon a Mattress, that I’ve wanted to be in since I was like 10 and my sister was a techie on the show when she was in high school. It’s kinda like a dream I guess. But, My college is doing the show, and I HAVE to try out, I’m nervous and scared because I have to sing. I’m a decent signer, but for the next month, I’m working my ass off to the amazing.