I scanned a thumbnail sketch of a street scene from a while back and played around with painting it in Photoshop, with the goal of building familiarity with mixing colors and tweaking brushes in the program.

For the first version (upper left), I selected colors using the eyedropper on the original photograph. For the next two, I looked at other pictures and paintings and mixed colors using the HSB sliders in the color palette, trying to copy some of those images’ color biases in light and shadow.

In the last version (lower right), I just mixed colors based on what I remembered from the previous scenes and tried to use colors across the image that felt related.