A few weeks ago I posted the preliminary sketch for this piece. The pencils still aren't finished but I think they're close enough to show. As I said at the time, I don't have a specific place or purpose in mind for this, I just thought it looked cute.
By the way, the actual pencils are quite a bit lighter than this. I bumped up the contrast.
Detective Comics #482 - Jim Starlin art
6 hours ago