I have read in other posts here that it is important to keep your head down right through impact and even keep it behind the ball. Before I tried this I used to push the ball to the left (I'm left-handed) but now with keeping the head behind the ball I seem to have a draw on a lot of my shots. I guess I'm trying to understand the mechanics of the swing and why this has resulted in a different type of shot. Is there a reasonable explanation?