I went to the range the other day with a friend, and I began taking practice swings, complete with divots. "What are you doing?" my friend asked. "I want to take a divot on my real swing, don't I? So, why wouldn't I take one with my practice swing?" I told him.You should, too.
To get used to hitting down through the ball, rehearse your real swing by taking a divot -- in front of an imaginary ball -- with your practice swing. Don't forget to replace the divot.