How to Improve posture to cure golf push shots

In this video Chuck Cook shows how to correct the push shot posture. He demonstrates that the correct posture for the shoulder should go down and out toward the ball which drives the club head around back to the left. To obtain this posture, stand with the feet shoulder width apart, the back should be straight up. Take the club handle and stick the end into your belt buckle with club head sticking straight out. Next extend the arms straight out keeping the club at the level of your belt buckle. The shaft of the club and your back should make a prefect tee shape. Next bend forward at the hips till the club head touches the ground, and then flex the back knee and this will give the prefect push shot posture.