Change your set up for each shot. If you are trying to fade a ball (for a right handed golfer) aim left and make sure that the club face stays open at impact. This will allow the ball to cut. And if you are trying to draw the ball then aim right and make sure the club face is closed at impact.
I suggest that you hit big cuts and big draws to get the feeling down then try to limit the amount of curve once you have the proper flight in control.
You can definitely curve the longer clubs easier than the wedges as the less loft on the club will allow you to curve the ball more.
Remember big curves to start and as you get more control of the club face you can calm the curve down.
I hope this helps! Good golfing everyone!!