1. On most pitch shots, I open the face and play the ball forward in my stance. That gives me more options. I can leave the face open coming into the ball and hit it high, or turn it down through impact and hit it lower. This is my 60-degree wedge.
2. An open face also lets the flange on the bottom of the club slide more easily along the ground instead of dig, which is critical for controlling backspin.
3. My weight is distributed equally between my feet unless I'm hitting a specialty shot. For example, when I want to play a low-trajectory spinner, I put a little more weight on my left side.