Gotta figure out what works best for you. I have a 1.58 putts per hole and I always aim my putts and try to ding on the line. Another golfer I know uses the other method of missing the line to aim the putt left or right, and their average is even better than mine. Your putting average is 2.28. You need to get your calculations correct for distance first. You can never get aim right if your speed is not correct. If I remember correctly as a Pro you are putting on very fast greens. You should be subtracting 1 foot for every ten feet of putt distance(this changes for different green speeds), and 1 foot add/subtract for every inch up/down. Also, when a putt says it is flat, the arrow can be pointing up or down, indicating a slight up or down to the putt. After that, the left/right aim just takes some practice. Keep in mind that the speed of your putt determines how much it will break, so if you have two lines moving the same speed one at the beginning and one at the end of your putt, the one at the end will affect your ball mroe because the ball is moving slower. This also makes a difference when you change green speeds, on faster greens your ball moves at a slower speed(because you have to hit it with less power) throughout the putt and therefore will break more.