This was a great exercise. Back to the fundamentals in structure. I, as I think a lot of cartoonists do, tend to cheat on these details. So... I am definitely going to keep doing this. Especially noses which I found I had difficulty with. It's has just been a great mental switch to think about this as a discipline and not as an automatic thing I do when I want to. You get out of it what you put in to it. No more laziness if I want to succeed in doing cartoon Illustration as a career.