At this point keep your head down, rather than letting yourself look up to see the ball starting its flight. Don't worry, when your swing is precise the ball has no choice but to respond correctly–Newtonian Physics, at your service. Your right arm has now extended fully, (again, physics; centrifugal force is inherent in your golf swing), and your golf ball is sent forth into the blue yonder, toward the pin.

Include some general flexibility training to keep your movements fluid.