The very first move from the top of the downswing
is for the right arm to begin to slowly unfold.
At address the right arm was long. During the
backswing the right arm folded and now it has to
unfold. As the right arm unfolds the golf club is
picking up speed and that move with the right arm
is the key to a faster downswing. At the same
time the right arm is unfolding the left hip has
to move an inch or two towards the target and then
it turns out of the way.