Now I know that some golfers like to take practice strokes (which can become good preview strokes) behind the ball while others take them right next to the ball (while in their setup position).
You need two things to make breaking putts: 1) a stroke that starts the ball on your chosen line and 2) the correct amount of speed so the ball can hold that line all the way to the cup. Good line good speed—nailing one isn’t enough.
You can’t dominate with your putter if you don’t know how to aim it correctly or how much break to play. Nail these fundamentals first. If you hook or cut-spin your putts your chance of success goes down. If your putts roll off the face in the same direction your putter is heading immediately after impact that’s good. If your putter moves one way and the ball another you’ve got problems.