...what jt said
Also give us some more details about your setup. Width of your stance, binding angles, any canting. Too narrow of a stance can keep you from positioning yourself where you want to be.
Keep your upper body "quiet" - especially on good old NY glare ice
Be aware of your arms - keep them forward of your torso. An arm trailing behind you may unbalance you on ice.
Look into your turns. The sound of ice can distract a person and make one look too closely towards the nose of the board. Put earplugs in to deaden the sound of scraping ice. It might help to concentrate your senses. Just don't drown out all sound.
At the top of the run, grab your balls with one hand and beat your chest with the other like a wild silverback gorilla. Tell the mountain "I'm coming, do not f@$k with me."
(>'.'<)This is Bunny. Copy and paste bunny into your
(")_(")signature to help him gain world domination.