Wow, great post!
Could you explain a little more about the mechanical and creative processes that get you from the second image of the work in process to the third? It goes from a simple circle to a fully detailed and life-like face! I feel like if I knew a little bit more about what went on there that I could perhaps stand upon the shoulders of a giant like yourself and improve my own meager skills. I know I can't hope to imitate this, but just trying it, it gives me hope and a purpose like I've never known.
Thanks, again!