Maintain the triangle you made at address--as you begin your backswing, keep your hands, arms and shoulders moving together in a one-piece takeway. This will help your club stay on the correct swing path, promoting a wide arc and resulting in more distance. Sweep the clubhead of your driver back, keeping it close to the ground for about 10 inches behind your teed-up ball. At the halfway point in your backswing, your club should be parallel to the target line.
At the top of your backswing, your right arm should be in an L-shaped position, with your right elbow pointing toward the ground. The left elbow should remain straight. Your club face should be square at the top so the club is parallel to your left forearm. Make a big shoulder turn. Your left shoulder should sit under your chin, and your back should be facing the target for maximum power as you uncoil and begin your downswing.
If your takeaway and backswing are correct and are on the right path, the downswing should be a continuation and culmination. This is where your power is unleashed. Your clubhead should be square at impact with your hands slightly ahead. Your left shoulder should be higher than your right--a good indication that your posture and plane are correct. Shift your weight from your right side to your left, then finish in balance with 90 percent of your weight on your front foot.