Background, context and additional characters

I started playing around with the idea of "Punk Girl" encountering another character, and this encounter would be the main theme of the piece. At first I thought about a cute character that would live under a bridge and began sketching a bat -like creature. But then I decided to include another human figure, and a rough hobo/busker type man came to mind. I also began including rough background sketches of urban environments, and decided to have most of the story take place under a bridge.