I really love and enjoy the Collaborative Art Challenge by @everlove. This post is beginning with a spoiled drawing. I was not happy with it, because I realized it didn't need black pencil shading, but I didn't want to throw it out, so I photographed instead.
This is my original drawing:
Inspired by the photo by @everlove:
Modified with Picasa (pixel):
Tiles:
More tiles:
Much more tiles:
Spirals: