When the clubface rotates the heel becomes the leading edge of the club and makes contact first so practice making dollar bill divots to eliminate that clubface rotation
Put a plastic ball between your knees in order to take your backswing with your torso rotating more than your hips, disassociating the lower body from the upper body and creating more power in your swing
There are four sources of power in your swing: the wrists, the arms, the pivot and your ability to syncronize and time the movements