Incidentally, as a road to better scores, I am focusing on improving my greens in regulation. In order to do that, I am trying to aim for the center of every green.
HOWEVER, the "center of the green" is really way too nebulous a target for my mind to latch onto. So, I look to see where the center of the green is, and then I focus on a very specific target that is distant to the green; like a tree trunk or the fireplace of a house. The more specific the target is, the better it works, at least for me.