For me - I can draw as much as I can visualize. That is, I know that a face is bisected sphere with some extra lines on the bottom for the chin. I can't hold th

For me - I can draw as much as I can visualize. That is, I know that a face is bisected sphere with some extra lines on the bottom for the chin. I can't hold this image clearly, but I can hold it for a fraction of a second - enough to know what to put on paper. I think drawing and visualization are pretty closely tied.