The only mishap while finishing the piece was that the original watercolor paper I'd used did not like artist's tape; when I lifted the tape, the surface of the paper came up with it. I had to start all over, wasting 3 hours of work. I'll likely talk about it in an upcoming process post. The inkwash was difficult because there were a lot of nooks and crannies I need to paint within while trying to approximate a fade from top to bottom.
I'm pretty happy with how this turned out. The likenesses are really close, and the expressions - especially on the kids' faces - capture their personalities.