It always seems like when I'm in the middle of a lot of work, I always get ideas for images that I don't have time to create. I always tell myself I will eventually make that image, but I rarely do. The paying jobs always seem to come first. Lately I've taken a little time out of each day to do a quick color/composition sketch and at least materialize these ideas to some degree, before they disappear into the nether-regions of my brain, never to be seen or thought of again.
It's also great practice! I intend to continue this exercise whenever possible, and maybe I'll end up finishing the "home-runs" from time to time. Thanks for looking!