After they finished patterning their lizards they cut them out and started designing the background. They were instructed to use the same colors and make patterns compatible but not necessarily exactly like the lizard.
After they finished coloring the background they could use water to blend the watercolor pencil. They could also use a sharpie if they wanted to define the outline. (The lizards can be glued directly to the background or you can use foam tape to give give your lizard some relief).
Camouflaged Lizards and Chameleons