Drawing A Freestyle Picture Puzzle

I've been enjoying watching the kinds of puzzles people create on this site. Here's an interesting one that was just added:

Primary Happy Man


I think this is interesting, because the puzzle is a cross between a "normal" Tile Puzzler, and Jigsaw Puzzle. The colors used help to create a picture, and you can use those colors to help you figure out where the different pieces should go. For example, the first pieces I put in place were the red ones, which appeared to be a mouth. Having done that, the yellow and blue pieces became more obvious.

I wonder what other kinds of "pictures" people might draw...