The best book in the world, IMHO, is called "Understanding Comics" by Scott McCloud. YES! YES! YES! I was trying to think of that one but I couldn't dredge the name or author up, so I remained silent because it sounded better than 'Um, there's one but I don't remember what it is or who it's by' There are other books to look at too -- comics. Good ones. Sandman and Death books. Claremont, Kirby, and Miller stuff. Mark Schultz (Cadillacs and Dinosaurs). Dave Sim (Cerebus). Watchmen. Kingdom Come. Marvels. Uncle Sam. Hell, anything Alex Ross worked on. Use them as examples of what to strive for. Try reproducing a page in Poser form. If you do well, go read the post I'm about to make.