Here's a ten cent tip. Take a dime and place it on the green practicing putting starting with 1-foot putts and increasing the distance when you consistently hit the dime with your putts. With this drill to improve concentration and focus, hitting the 4 1/2 inch cup will seem like a basketball hoop.

Another 10-cent putting drill would be to take a dime, place your ball on it and putt as usual but this time you'll keep you eye on the dime after the ball has left. This drill is aimed at helping you develop a consistent and reliable putting stroke by fighting the urge to follow the ball with your eyes, head and shoulders.