When you need to intentionally draw or fade the golf ball you can focus on your finish.
When I draw the ball my finish is higher with my hands, the club has circled around and is across the back of my head. The angle of my of my follow through is more up to right field.
When I fade the ball my hands finish lower than the club head and the angle of my swing is more to left field. Simply by practicing the specific follow through you can shape your shot one way or another. My embedded youtube video will give you an excellent visual to my description.