I need help...please?

Just take deep breaths and remind yourself toi can do it. Try not to think about the people watching, think about the emotion toi put into the song :)

Tell yourself toi can do this. and picture everyone in there underwear :3

well my mind is very very active i can imagine a robot out side the school shooting at something
.....thats just me but the best way is to think about the future just think about when your chant think that your a étoile, star and the ppl in the crowd is your fans :P

Have toi ever been on stage performing ou something like that?
If toi haven't, let me tell toi something, it's not frightening at all, because the light won't let toi see the people, so it's like toi and your friend are there alone and that's a plus if you're afraid/nervous to go on stage.
Another thing toi could do is:
-Imagine you're in your room ou some other place where toi feel calm.
-When toi enter on stage never look at the audience and when toi start singing, start with your eyes closed and, slowly, start opening them.
-Sing turned to one your Friends (e.g: If you're 4, toi sing turned to friend 1 and Friends 2 and 3 sing turned one to another)
-If toi can, ask the guy who's responsible for the lights to turn off the lights for the audience ou something like that.

Oh my goodness. I remember when I used to have stage fright. Well here's what I can tell you.
I suggest toi bring the lyrics up on stage with you. Then don't look at the people out there in the crowd and just read the words.
If toi can't do that picture everyone in their underware. That's the best I can tell u.
Good luck with the talent show.

The important thing is to have fun. If toi enjoy that song and mentally at that moment live that song...it won't be like you're performing it. People will see it as real because toi enjoy it. Same goes with anything!