As the arms continue their journey back, concentrate on turning your shoulders so your left shoulder moves into the place where your right shoulder was at address.
As the body continues to turn about your hips, the hingeing action of the wrists will point the clubhead up towards the sky.
At this point the club's shaft should be at the same angle as it was when you addressed the ball.
At the top of your backswing the shaft of your club should be parallel to the ground and pointing directly at the target.
The angle of the club face should also be parallel to the angle of your forearm.
At this stage 90% of your bodyweight should be on your back foot.
Your shoulders should be square to the target, your back directly facing it.
At this point your body is perfectly coiled to generate maximum power through the ball.