The "up the Wall" backswing thought is to imagine that at address the tip of your club is against a wall that is parallel to your target line, as you begin your backswing your thought is that your arms lift the club (as your body starts it back and in) up the wall. You might want to give it a try in your garage. Be careful not to try and reach too far out to keep it "on the wall" as the pivot starts to take it "in", it is merely an image to get you thinking more "up" in your backswing sooner. Hope this helps.