This image represents the before and after of an illustration done on Saturday - the last one for the book I've been doing for two years. It is an alien world with some pretty obvious geologic features (which make it a lot less realistic) that the students studying with the book can point out and identify. The sketch is what I started with - which was drawn by the author and the bottom render is the raw 3D render done out of Lightwave. It includes displacement maps and a hand painted texture derived from many Google Earth screen grabs and an assortment of planetary images maps from our solar system as wel as a lot of photoshop brush work.