Have you ever been to the driving range and seen these guys who make these hard swings from the top with their drivers only to hit well behind the ball? The reason for this is that their body moves ahead of their ball and they early release the club.
What I want you to feel is the heavy part of the club in your hands by turning the club around. Make normal swings with the club turned around, and stop just past the impact area to feel how your body is reacting to create more power and speed.