I have a file of ideas for paintings (actually, I make thumbnails or just write a phrase in one of many sketchbooks). Sometimes I start collecting references, but I have a huge backlog of these. I lost quite a few working sketches and reference photos that I had on the computer a while back when it went kaboom.
Yesterday, I decided to dip into the well and finish one picture. This concept has been floating around for 3 or 4 years now. I consider this more a sketch than a painting because I did it on cheap watercolor paper that can't take too much layering of color. But the basic idea is there. An aardvark gloats over the fact that he's the first animal in the alphabet book, and the zorilla is the last. Background looks yucky because I did it last and the paper kept sucking up the water, making the wash uneven. I do like the aardvark's feet.