Take two alignment sticks. Place one through your front belt loops. So that it is parallel to your hips. Take the other rod and hold it on the club shaft so it extends up the lead side of your body. On the back swing point the club shaft stick at the target line or just inside it. On the down swing the club shaft stick needs to come down infront of the hip line stick and behind or to the right of your trail hip. Then you swing the club into the ball. This is an exaggeration but it is what a lot of great players feel. It keeps the club in the correct arch an position relative to the rotation of your upper body.