You can make a small change in the way you stand at address. Your left shoulder needs to be facing the target. That part does not change. But you can make a slight change with your left foot in order to get more power. Angle that foot out a few degrees in order to get more power. This is especially effective when you are teeing off. That slight angle to your front foot will promote more of a hip turn and a follow through.
When you are standing over the ball as you prepare to hit it, check your grip. In order to promote more power in your swing, make a slight change in your grip. Turn your left hand a few degrees to the right so that you can see the knuckles on your left hand. This will give you a little more quickness on the downswing which will help you hit the ball further.
As you begin your downswing and come through the ball, you have cleared the hitting zone with your hips. Now it's about your hands coming through the ball. Most golfers realize that the left hand is the lead hand and does most of the work on the approach to the ball. However, at the critical moment of impact, the right hand takes over and snaps through the hitting zone. It also promotes the follow through up to shoulder height. A significant release with the right hand will give you more distance and help keep your shot on course.