The putting stroke is the easiest stroke in golf if we let it be. “We” — not anything or anybody else — have the unique ability to ruin the integrity of a good stroke by trying to guide the putter head path and force an unnatural rhythm, which is different for every stroke, and look up during the stroke.
We can correct the path and rhythm errors by;
Relaxing over the putt,
Hold the putter with a light grip which will tend to help the rhythm
Use our shoulders to take the putter back – not the hands or arms. Using the shoulders, to initiate the back-swing, will maintain a natural swing plane (see chapter seven in the Fundamentals of Putting).
Lastly by keeping the eyes focused on the spot behind the ball for two seconds before the stroke and several seconds after the stroke has been made –-“The Quiet Eye” — will maintain the critical body alignment affecting the face angle at impact .