Interesting idea! Did you use that Gimp program to make these pictures?
Considering the background photo and the colors, I think Earth Mother
works best. Jack looks like he's out of his element and seems surprised to be
Edited to add:
I took another look at the Gimp program you recommended and found that it does, surprisingly, contain a painting feature after all. After watching a video painting demonstration, however, I think Gimp is more complicated to use than I find ArtRage to be.