I put some grayscale into this pic with PhotoShop to give it more depth than just the line drawing.  I like how her hips and thighs turned out with the shading; the white of her underbelly and inner thigh works nicely with the darker colours of her rear and bikini bottom, very pleasant to look at (also in part due to which area it is ;).  I did a gradient fill on the trees and mountains to give it that misty mountain look, and the sky was done with the render diffuse clouds option.