Since there are many great articles about the issue, I think giving them to aid you is the first step. If that doesn't work, well revisit the issues.http://articles.elitefts.com/articles/t ... wer-clean/http://articles.elitefts.com/articles/t ... ang-clean/http://www.t-nation.com/free_online_art ... _the_clean
These are hang clean, power clean, and Olympic clean help articles, I would think you'll find everything from there. The basic idea is the same in all the movements, usually they are just missing a phase or a movement. (Like in hang you don't have the lift off, and power has only little squat in it.)
But for what I read and know, you're having issues with balance and the pull phase. It seems that if you are doing some sort of curling, you're totally missing the hip hinge/high-pull/clean moment on the lift. Also your point of balance might be off. The bar could just be too far from the body, or your bodyweight is focused solely on your toes or heels. That or too narrow stance could be reasons.
Video would be helpful.