well Jackelope is right, you should really ask your trainer what is best for you to do. however, i can give you some generic advice. for short, point based grappling matches don't ever over commit. be aware of where you put your arms for guard passing and try not to place your hands on the mat (it is bad to do this unless you are a JJ expert). stay away from risky armbars or leg locks because more often than not the just give up position rather than finish your opponent. go for kimuras/americanas whenever you can (when not in mount) because even if you don't get them they improve your position and score you points.
other than that, good luck and i am sure you'll do fine.