Take your address position with the sun at your back and place the shadow of your left cheek (for right-handers) on an object such as a divot, tee, ball, etc. While watching your shadow, swing your club back and through. Gong back, the shadow of your head should move a little to the right. As you move down, your head should remain behind your object until follow-through. Ingrain this feeling of staying behind the ball through impact.
Great tip. I also found that looking in the reflection of a window helps when you want to look at different positions in your swing. Unfortunately not every drivin range or club has a mirror out on the practice tee.
