STEP 3: Changing Plane
If you have an out-to-in swing like most amateurs, your upper body is unwinding too fast and your club is approaching the ball too steeply. To change to a positive attack angle, you need to groove a more in-to-out swing. Try this baseball-swing drill to engrain the feeling of your new attack angle.
STEP 1 Swing the club in a baseball-like plane, above the ground, and drop your back foot back.
STEP 2 Make your regular golf swing. You will feel like you're making a more in-to-out swing.