My first grades created cityscapes at night to go along with their unit on communities that they have been studying in their homerooms. We started with oil pastel to create the sky design. They then painted them with watered down blue tempera I mixed. In the second class I demonstrated how to "build" their cities using geometric shapes they cut from either purple, gray or black paper. They used painted paper scraps for windows and doors. Any finishing details were added with oil pastel. They did a great job!