The green is the second-largest on the course with a consistent elevation drop of four feet from back to front (though mild undulations help channel shots toward the center of the green). Depending on the wind direction don’t be surprised to see some players swing driver here. It’s an absolute beast.
This change in grip position effectively shortens the clubshaft and takes a slight amount of power out of the swing making it a little easier to keep greenside shots under control.
You don’t have to be perfect but you can’t do any of the important things badly. My advice? Believe in yourself. Becoming a great putter isn’t easy but it’s possible (Phil Mickelson at age 48 is enjoying the finest putting season in his career). Maintain a good hardworking attitude as you work through items 1 through 9. I’ve seen success stories happen thousands of times. Everyone is capable of improving.