All good golfers have on thing in common: they all finish on their left or front foot after the swing.  They move forward so that the left leg braces or allows the body to turn faster and propel the club against the left side.  Think of a hockey player making a slap shot.  He braces his front foot on the ice and turns his body against the braced left leg.  It is the same in golf.  In practice, make a strong move to get on your left side and drive through impact with your left leg braced. With a solid finish on your left side you will hit better golf shots and ultimately post lower scores.