Floating Windows and Stars

I made an un-fixable mistake on this, but by the time I realized it I was too deep in to want to abandon the drawing, and I definitely didn't want to start over. So, the area around the dangling key looks weird, but hey, it probably looks better now than it did before. Went through a phase where it looked like the bird was flying off with a pepperoni pizza. Maybe I should have left it that way.

Wouldn't mind fixing recommendations as long as they don't involve starting over. I thought about digitally editing but it does feel like cheating.

Pen exercise. Black ink, white paper.