Try to release the club just like you were hitting a drawthe toe of the club should point up as you follow through and the clubface will rotate closed. You'll put less spin on the ball and cause it to run once it hits the green.
Next time you're in a practice bunker, pick up a handful of sand with your right hand and hold it in front of you in the "address" position. Now throw it over your left shoulder.
This is the action your right hand should make after impact, because it closes the clubface to create the lower trajectory. Use this thought and you'll have a new shot to save par.