When you take a few practice swings do you look at where the club is sweeping the ground or where you take a divot? This will help determine where you should place the ball in your stance. You should be making contact with the ground in the left portion of your stance...left of center (assuming you are right handed). If you are making contact with the ground or ball right of center you probably are not getting your weight shifted to the left soon enough. Most of the very good players start their weight shift to the left even before they finish their backswing. That may be a key swing thought...start a lateral shift to the left before you reach the top of your backswing. Hope that is helpful to you.
Seeker