No tricks really...taking a long look at the hole, freeing up the putting stroke and allowing trust to take over the swing works better than one would think...solid mechanics is a must...like Bignose said, if you are striking the ball erratically, you won't be able to internalize the "feel" of a visual distance as results vary...bottom line is the more that you put into working on fundamentals of striking, and the more you roll balls on a real green, the more you will develop feel...pros spend huge amounts of time on putting...a time investment in this area will go a long way...