I had a buddy of mine record a couple of swings for me (but we only looked at them at the range, I haven't gotten a copy of them here yet to post) but two things really jumped out and I wanted to see which one I should work on first.
1) My head has a tendency to move a couple of inches down on the backswing, and this is sometimes coupled with maybe an inch of movement towards the ball (in a DTL view). With a face on view I can see the vertical drop, but luckily, there is no left/right movement (well, it moves right, but well into my follow-through). So what might be causing this, and how should I tackle fixing it?
2) My left arm appears to be detaching from my torso in the follow through (i.e. if I had a tee in my left armpit it would have fallen out shortly after impact). From everything I've seen that left arm should stay fairly connected to the torso through the finish.
Which of these is a bigger problem, that I should tackle first? And what are some good drills to do so? (Obviously for #2 its the "tees under the arm" drill, so really I need a drill for #1, and a priority between the two).