Anti-chicken-wing-drill: Half shots ending with straight arms.
Anti-Fat-Drill: Try to keep your head (and therefore your shoulder centers) in place. Don't move forward (head etc.), don't move down. Again, doc prescribes half swings.
Casting: Work on right wrist hinge.
Oh, I am just a high handicapper currently learning S&T and just got that covered - do it in the above order :D