FIXING AN OVER-THE-TOP SWING
This starts from taking the club too much on the inside going back (make sure you take the club straight back until waist height), or starting the downswing with the upper body. Always remember the downswing starts from the ground up. The lower half initiates the downswing. Legs and hips lead ahead of the shoulders on the downswing. Practice swinging with one hand (right hand for right-handers and left for left-handers). Feel how you hit from the inside.