[wally888]

I'm a right hander. For 40 years I was an average or worse putter. Finally settling on good hinge action and being able to relax over the putts, I was much improved.
I also found that opening my stance a little on the dreaded left to right breakers, allowed me to get the ball rolling on the intended line, thus making more of these putts.
I think Chi Chi originated the method of contacting the ball near the toe for slick down hillers and nearer the heel for right to left breakers. All also helped me.