No offense, but this technique is way off the mark on all counts. Normally I would not bother commenting, but this is not good for even new golfers to follow. There are no shortcuts.
If anyone wants to truely get better at putting, there is only 1 way IMHO.
Everyones game is a little different, their balls, their greens, their screen resolutions, how hard they hit the putt etc, so there are no easy answers or quick figure outs.
If you want to get better, practice, but practice smart, how much will a tournanment green move a 2 inch downhill 10 foot putt on 4 second dots? How much will a level 10 foot putt move on 5 second dots, how much will a 10 foot 4 inch uphill move,,Etc and etc.
The only common denominator we all have are 2 foot grids, figure out how much the ball breaks on the above putts, theres a math formula in there somewhere. Distance, down, up, level, speed of green, and speed of dots being the only factors.
Figure that out, and over 45% putting is your reward.