First time performing, any advice?

-I joined a Shadowcast for the Rocky Horror Picture Show and my first performance is tommorow. I'm a Tranzie which if you haven't seen the movie is basically on of the people who does audience participation lines and dances to the dances and interacts with the audience. I'm really nervous, does anyone have any advice?Before going on stage, take a big breath, check your zipper, and let the breath out. You are doing this because you want to. Go out and have a good time. RHPS is all about having a good time. Do it to it.