[neil]

When hitting, make sure your right arm thrust is down and OUT toward first base. For me, when I close the face slightly and drive out toward first base, I am assured a nice draw. If you are hitting it left, you aren't hitting the inside quadrant of the ball.

Or you have not moved the ball back far enough.You always have the option of adjusting the stance line (closed )and using your normal ball position with a closed clubface.
What 8 cork says is so important -if you are not hitting the inside aft quadrant !!!!.It will feel counterintuitive -hit right go left-but it is a must .
Also be careful to check your stance line using dowels /clubs laid on the ground -you may not be just altering the ball position,but also your stance without knowing.