Move on to your right side on your backswing

This is possibly the biggest cause of problems with your golf swing

In fact, you have to stay absolutely centred over the ball.

As you start your backswing, make sure that your right shoulder goes back immediately behind your neck. This will stop any lateral movement to the right. You must not move your axis to the right because then you cannot get back on to your left foot easily and generate power at the same time.