The backswing starts with the initial rotation of your shoulders and hips. Bring your arms and hands back and over your head. Your back elbow should be horizontal with the ground. The shoulders should turn fully leaving your back facing the target and your weight on the back foot.
Novice view
Expert view
The downswing begins by pushing your weight from back to front and rotating the body and hips. Your shoulders, arms and hands will follow, powering the club through impact. As the ball is struck your hips are turned with the shoulders parallel to the ball. The movement continues until the whole body is facing the target. The motion should be constant from the start of the downswing to the finish of the follow through. Remember to keep your head down and keep your eye on the ball.
Novice view
Scientific Terminology
Rotate the hips and shoulder to begin the backswing. The humeroulnar hinge joints will flex as the club moves up and behind the head. At the top of your swing, your posterior should be facing the target. The superior half of the body will twist as the inferior half of the body should remain stable splitting the transverse plane. Rotate the hips and shoulders forward to begin the forward motion of the swing. As the club follows thru, extend the humeroulnar hinge joints to strike the ball.