...sometimes it's an amazingly tedious process of adding something, taking it away, adding it again, and so on, etc. This is particularly true of the background space, specifically the sky. I've been working on this section alone for a few days, continuously tweaking the color and light until I feel it's right. Then, I'll start to approach the objects in the foreground which will in turn cause me to have to make changes to the sky! It's an endless back and forth - once that dance feels complete then I know the painting is done.