Feel Is In Your Fingertips
If you don't worry about anything else in your putting stroke, lock down these two fundamentals, and you'll improve right away. First, make sure the putter grip is in line with your right forearm, not hanging below it (inset). This helps the putter swing easily on the right swing plane. Second, set your hands so the grip runs through the lifelines of your palms and you're holding the handle mostly with your fingertips (left). If you were tossing a penny, you wouldn't set it in your open palm; you'd hold it in your fingertips, for feel. That's what you want when you're putting.