When I was little I used some Homepathic drops too! I don't know if they actually worked or if I just thought they did, so it did (good ol' placebo) I warm up my hands under water, and sit on them, and during a competition, I read the msuic and play "air paino" on my lap. I also just think about what every note should sound like and imagine the perfect performance. I also Go outside with some friends and get them to make me laugh if I'm really nervous, The tension just leaves, all though I laugh excessively loudly and too much, but it sure makes me feel better!