Keep your hands moving
I love to hit those low-flying pitch shots that hit the green and check up after a couple of bounces. They are so much fun to play, and it always gives the gallery a thrill.
To execute this shot, I set up with my weight mostly on my front foot and the face of the wedge slightly open. But the real key -- for any pitch shot, actually -- is to accelerate through the ball. I know it's hard to convince yourself to make a firm swing for a short shot like a pitch, but if you keep your hands moving through the shot, you'll compress the ball and create backspin for quick stopping on the green.
If you're having trouble accelerating, try making a compact backswing, which promotes acceleration on the downswing.