Make sure what you are doing, do it exactly the same every time.....that's kinda what I was doing, I could draw the ball pretty well so my instructor Kim from Dragon Billiards asked me to draw the cueball straight back into the side pocket, everytime I tried I made the shot but the cueball missed the the side pocket to the right, I tried several times, the cueball missed the pocket the same way every time, it became clear to me why I was struggling to learn how to play position, because I was not lined up properly I could not predict the way the cueball would move, I was not lined up properly because of where my eyes told my brain where true center was, I only had to move my head about a quarter of an inch to get MY vision center, I now aim shots before getting down on the table using vision center. in the 8 months of working on this my game has progressed more than all my years of playing pool, it's not eye hand coordination, it's eye brain hand coordination, all you are doing is teaching your brain how YOUR eyes see what true center is, I use it in everything I need to see a straight line in now.