The main thing that I am having trouble grasping is the movement of the shoulders. I see the correct movement is vertical with an iron swing, instead of what I have been doing, which is more horizontal. This is to encourage a downward blow. With a driver, I know you have to keep the right shoulder lower than the left at address, which I think is to encourage an upward blow. In this regard, do the shoulders still move vertical, with the left still towards the ball, albeit pointing up instead of down for the driver? With the downswing, do I consciously have to worry about how the shoulders turn for both irons and driver? This would help clear up a lot of my confusion in the swing!