Four of the accepted rules of putting technique are: One, you must get your eyes over the top of the ball. We have a lot of golfer dropping balls from under their eyes or asking one of their playing partners whether their eyes are in the right position and this is very hit or miss and quite confusing. Second rule is that you want to get your shoulders parallel to the line of the target, this will help the plane of the stroke and keep the putter on line. Third rule you want the putter face exactly perpendicular to the line to the target, meaning that the face is square. Fourth, and very important on short putts, is keep your head still throughout the stroke. With all of these in mind I developed the putting mirror. When I set up to the putting mirror I can see my reflection in the mirror and I can see if my eyes are directly over the ball and over the line to the target. I can see that my shoulders are parallel to the line of the target. I can see that the putter face is perfectly square to the line of the target. As I stroke I can see my head in the mirror and the fact that my head stays perfectly still. Look for this product on my GolfSpan Aisle in the ProShop and you will improve your putting.