For a right handed golfer if you can get the hands slightly ahead of the ball at impact, it will show you are striking down and through creating a bit of back spin and bottoming up the club’s arc, just after the ball. It’s this bottoming up of the arc just after the ball, which will produce the most back spin and the most consistent ball striking.
Right Hand Golf Tip: How to Create Good Consistent Ball Striking (Video) - by Peter Finch