90-second putting tip from Tom Watson. He recommends adjusting the left wrist position, albeit for sloped greens. I always thought one should take the same putt on left/right breaking putts, just aim at a different spot. I adjust the left wrist position on full shots, but not putts.
https://www.youtube.com/watch?v=E7LHOrQtd28
My favorite thing is to look at the hole and lift the left shoulder at impact on putts. This stops me from moving my head and coming over the top with my right hand. I have a tendency to do the latter on full shots too, so sometimes I do the left shoulder lift on full shots.