FullMetal Alchemist The Hiroshi Arakawa Illustration Collection

The book is hard back, and something to look at even when closed.
This book holds within it all sorts of methods by Hiroshi Arakawa. He dabbles in water paints, a larger pallette, and other things.
The quality of the original art shines through on this paper, and you can still tell every detail that was there in his original paintings.

Definitely worth the money.