I recently bought How to Draw Fantastic Dragons and Fantasy Creatures by J. "NeonDragon" Peffer - and it's a great book: I highly recommend it! I'd done some dragons, but the best of them was the cookie dragon which is fun, but nothing spectacular. This dragon is based on the "basic dragon" she shows you how to draw on pg 16-19, but I thought that her dragon was too horse-like, so I made some significant modifications to the wings and tail, among other things. I'm pretty happy with how it turned out.