Think of your body as door hinges and your arms extended out as the door, when the door opens there is no roll in your arms, the toe of the club starts pointed up and goes back and through the same way, this is how your backswing should function
A good pre-swing routine allows you to check your set up, alignment and aim while signaling the body to start an athletic golf swing
When just off the green, use your putting stroke with a 7-Iron