nice, info thanks for posting the links.
--I like how he mentioned adding detail loses energy. Although i've heard it before, it was nice to here again. Lately i have been relearning my old rendering and crosshatching styles. I really actually hate over rendered crap because i see so many people try to hide bad drawing behind it.
--if you are the guy asking the questions, (in the how to draw animals clip) i'd like to mention that a comic book page's "composition" is referred to as the layout unless it is a cover or splash page or some sort of single panel. It just helps to avoid confusion. Instead of differentiating between page composition and panel composition.