This post contains a simple bit of advice that I have often found very useful for players who are working on their throws. Generally speaking, control and distance in a throw comes from making sure that the disc is spinning. Spin is added to the disc via a good wrist-snap, but how can you improve your wrist snap?
One way is to make sure that you’re cocking your wrist when setting up for your throw. If you pick up a disc in either a backhand or forehand grip it is unlikely that you will naturally cock your wrist. The “natural” way to hold the disc (in either grip) is to keep your wrist straight, in line with your arm.