Plane question
 

I see that the photos ted post are always using the turned shoulder plane, as the plane that he gets people to come down on.

What is your goal on the downswing in relation to the turned shoulder plane?

Is the palm of the left hand, shaft, back of clubhead and hosel all coming down the turned shoulder plane?

When I view most tour players they shift to a lower plane throughout the downswing, why is that so common in them?

Last thing what happens when the clubhead drops below the turned shoulder plane?

Thanks!!
Nathan Wolfe