On tough shots don't let tension and pressure ruin your frame of mind, create a line of commitment away from the ball where you do your work before you swing
A two plane swing requires you to start your downswing with a hip bump forward and then arms pulling down, which relies a lot on having good timing
On the edge of the green when you encounter a nasty lie in deep rough do not try to help the ball up in the air, it is imperative that you strike the ball with a descending blow, playing the ball slightly back with your weight centered or slightly forward