The most important thing in the golf swing is making proper impact. You can have a swing that makes three loops at the top of the backswing but if you return back to the golf ball with a square clubface you can hit solid shots consistently. Proper impact consists of making sure that you make contact with the ball and the ground at the same time and your hands are just slightly forward at impact with an iron. What you want to make sure that you don't do is that you don't want to hit the ground before you hit the golf ball. That is hitting the big ball before you hit the little ball. If you make a mistake you would rather hit the ball first and then the ground. But for ideal contact get the ball and the ground at the same time, let your body turn through and you are going to hit some amazing iron shots.