A good swing starts with a good preparation for backswing, as well as the actual backswing itself. To improve your golf score by a few strokes, the backswing would be a great place to start.
Before starting your actual swing, make sure you are properly stable in terms of your posture, stance, and alignment with the ball. With regard to your posture, it is important to be firm but relaxed; this includes the arms as well as the grip on the club. Make sure your knees are slightly bent but spread evenly with your shoulders. Don’t overthink it, a good golf swing is actually a very natural movement.
Think of the movement of the backswing as a coiling motion, just like a heavy rope being twisted. When the rope cannot coil any longer, the tension has built up and is ready to explode – the same as your body will when preparing for the downswing.
Keep the following three tips in mind while working with your backswing:
1) To know whether or not you are rotating your shoulders enough, keep in mind that your chin should be touching the left shoulder when you get to the top. If not then you need more rotation.
2) Also at the top of the backswing, your right leg should be in the exact same position as it was in when the swing started. The foot should not move and there should be no flex in the knee.
3) Keep your hands close to your belt buckle. Imagine that they are tied together to your buckle with a rubber band. As you are taking the club back, imagine that the hands are attached to your belt with this rubber band and do not lift your hands until your shoulders have completely turned away from the target.