i agree with what don said earlier...i'm no master of shot shaping, but after trying a lot of stuff, the best results i've had have come with doing the following 3 things:
1. your body should be ALIGNED with where you want the ball to start
2. your club face should be AIMED where you want the ball to end up
3. swing normally on the plane that your body is aligned with.
other things you can try are coming in a little more inside (intentionally making the "mistake" most beginners make), or tightening up your lower hand making it harder to release the club and thus leaving the face a little more open.
another mental trick i learned is try visualizing what part of the ball you want to hit. for instance a straight shot, you want to make contact on teh middle of the ball...the inside of the ball for a fade and the outside for a draw. a drill to help with this is using and impact bag, and trying to make the bag spin a little by hitting different sides of it..its one of those over exaggeration drills that result in the desired ball flight things.