This shadow drill will help get your weight in front of you on the follow through, eliminating high shots caused by hanging back
Hitting a guaranteed draw every time, to get around things like a tree, is simply learning how to set up for the shot with a closed clubface, closed stance, do not turn your body too early and allow your forearms to rotate through the shot more
Maintaining a constant posture will stop your body from moving into the ball on the downswing