That stat which comes from putting studies I’ve done using PGA Tour ShotLink data should scare you. Say you face 12 putts of 30 or more feet per round (which is about right for a mid-handicapper).
We’ll often add a Pelz Teacher Pointer (the device you see attached to my flatstick in the photos at left) which makes checking face angle and path a no-brainer. In the top sequence at left I’ve made a traditional arc stroke. You can see on this straight putt how far to the right of the cup the face points as I swing the putter to the inside on my backstroke.
Get synchronized with your upper and lower body moving as a unit. Smoothly decelerate the club once the ball is on its way. Your finish should only be slightly longer than your backswing. Hold your finish position until the ball lands on the green. It’s a good way to instill balance in your overall motion.