A whole page of contests, 6 are for guitars
I could only enter 4 of the guitar contests cause I'm Canadian. I do believe that an American has a better chance of winning but I still gotta try. There on Ultimate-Guitar, here's a link to the contest page http://www.ultimate-guitar.com/contests/ Good Luck.
Where do you get your energies? Well its a vicious circle thing, If I hadn't ever played an instrument then I wouldn't ever need to play one. But now that I've been playing, I need to play. - Eric Clapton 1967 RollingStone interview