Ah stage fright....just keep practicing in front of the mirror, or even your family. Maybe even going to your friends house and practice in front of them to get used to having other people watch you. And when your on stage, don't let the stage fright get to you. Even though your nervous, no one can tell but you. Being nervous even helps you project your voice sometimes. Oh and when performing, just think of you acting in front of your family or friends and everything will be OK , and think about it, get it done and over with. Act as if everyone out there were looking up to you. Good luck