See the Coin-- Putting Drill

See The Coin 

This is a drill using a coin with the objective to practice a few putts with the ball positioned directly on top of a coin (again, a small coin is good here, but so is a small ball marker).  The goal here is to keep the head and eyes fixated over one spot. By doing that, you’re more likely to swing the putter in the intended direction. If your head moves, it’s likely your path will too. So stick with this drill, and hit a few five-foot putts with the ball on top of your coin, and make sure you see the coin after you make contact with the ball. Keep that head steady and see the coin, and I know you’ll soon see better results and make more putts!