Where could I find music critiques?

[~Axis~]

I dont know any but competing with those pros at OC remix will really push and motivate you to work and try harder to stoop to their level. The intimidation will help you improve. I think you should join there. Just think about how fighting characters in DBZ/anime get stronger, they fight against enemies above their level and lose a few times then win. Thats how I feel.