Shading - trying to find base shadows and Ambient Occlusion
Color filling underneath
Adding more color and depth.
Cropping and more refining.
Rim light and more refining.
Finishing up with final details.
Final - added effects
This was a contest entry to Hardcover's contest. The criteria given was to create a sexy (or not sexy) bunny pin up interacting with the hardcover book in some way. I went with Hardcover's color scheme of black and orange/copper.