Here is a video of some work I did with Andy Ogletree.  We were working on getting his left arm lower and in better position at the top!  Andy’s tendency is to lift his arms and not turn his hips and chest enough going back.  Sometimes when you put an obstacle out there it cues a player to make a better turn and get the club in a better position!  If you struggle getting the club turned into a good position at the top grab a friend and see if this will help!