@ trev: I said in my last line that once you know how to decontruct the human form it becomes a matter of instinct.
To me it's obvious that the individual who knows anatomy (even from a rudimentary POV) is a far better illustrator of form than those who don't... as adarias says, there are certain landmark bone (and there subsequent protusions/indents) on the body that a key to helping people understand the form more... for me it's more important to understand why the bones connect the way they do and what shapes they take - key areas being, collar bones and shoulder blades, the knee joint, the indents the ball joint of the hip/femur makes, the protusion of the pelvis, the two indents the sacrum makes on the lower back, the ankle bones, the wrist joint, all the joints of the hand and feet, the skull.
All these points can be deconstructed into simple lines and balls - and that's my point, and one that you agree with...
Perhaps I over specified these in my original post - but the fact remains if you don't know these key elements of the underlying skeletal form for creating a human figure then the ley-artist will struggle, particularly with the detail. To me it's those subtle bumps and indents that show the full understanding of form - regardless of it's application.
I actually think that yoshi's done a pretty good job on these, but I think his work will improve by knowing these key landmarks...
