Spent some extra time on this one playing with backgrounds (which are not my strong suit.)
Did two. I loved how the parking lot turned out after I drew it, then finished coloring. But once I inserted it into the background behind the characters, it looked WAY too real next to the more simplistic cast designs. I kept having to dumb the shading down repeatedly to get it where I wanted.
That and the lines. I mistakenly did the lines too close to the same weight as the foreground characters. So I simply colored them, but then had to repeatedly tweak the colors of the lines to not end up lighter than the shadows they were next to. First world problems.
I know, right?