1. The most obvious change is the position of the shaft in relation to my left arm. At address my left arm and the club formed very close to a straight line.
By the time my left arm is parallel to the ground, my left arm and the shaft form a 90 angle. This change has been brought about by the folding of my right elbow and the hinging motion of the wrists.
To work on creating this 90 degree angle, you should allow the back of your right hand to break so that both your thumbs point to the sky.
When you are practising this movement do not forget the rolling motion of the arms. To check you are doing this correctly, make sure that the angle in the back of your left hand never changes from how it looked at address.
2. The folding of the right elbow is vital to successfully finding this feeling of hinging the club into a 90 degree angle with the left arm. My right elbow stays close to my side during the first ½ of the swing.
If the right elbow swings away from your body your right arm will stay too straight and the co-ordination between arms and body will be lost
3. You can see clearly how my body has started to react to the swinging motion of the arms. By the time the club is half way back, the body will be approximately half way turned.