When you're having problems making good contact, it's often because you start to sway, lose balance, and stop turning. One of the best drills to help cure this problem is to hit balls with your feet about six inches apart. Start out by hitting shots with short swings. You'll notice that in order to do this, your balance must be good. This drill promotes good footwork, balance, and a free swing with the arms. Also, it forces you to turn more; otherwise, you'll fall over! When you feel as though you're making good contact, increase the length of your swings. Eventually, you'll feel confident enough to hit from a normal stance again.