also.... dont think of sparring as winning or loosing, you dont actually win or loose during a spar, everyone wins because anything you do in there is part of training...... simple advice...
stay calm,cool, collected, take it at a comfortble pace, make the other guy work at your pace dont wait for his shots, get off with your own, if you cant think or see what to do keep the jab out there..
look for your oponing, hit it.. always keepy the guard up and always stay thinking..
peace