Lark's post reminds me of when I attended a college forensic anthropology class. If you do not know what it is, it is the study of human bones. Part of the test was to put your hand in a bag and identify the real bones by feel alone. I remember studying for that test. I did exactly what Lark is talking about! I studied photographs of each bone and closed my eyes and visualized them, moving my hands as if I was holding the bone itself. I wasn't able to do this in real life to study, so I used my mind. I did this for so long, I felt like I had the bones in my hands. I felt every ridge and rough spot, every dimple and dent, as I imagined looking at them. I aced that test. It was an incredible feeling!
The skill of visualization can aid you in many ways throughout life, not just magick.