Smiling...er...Grimacing Frog

A green frog in a sitting on a tree limb tries to crack a smile for his portrait.  He's having a little bit of trouble since frogs don't normally smile.  So, he has more of a grimace.

For this frog themed artwork,  I wanted a rather detailed close-up of the amphibian.  However, I didn't like any of the existing frog models in my library.  They just didn't hold up when the frog was so prominent in the art.  So, I created my own frog model by constructing a virtual sculpture of the frog using Sculptris - a free but rather powerful computer application for creating and painting virtual 3d models.