So, this is what I ended up painting. I called it Selous' World (the reference should make sense if you've read the book.)
Now, one of the neat things about the 5x5 canvases is that they are stretched around a wooden frame that is a bit over an inch deep. To a guy that likes to use chapter titles as a way to add content to a book, I thought, why not use the side too? This is the angled view.
Despite my considerable lack of skill, the canvas was, indeed, purchased.