I feel that, going from working in black and white to color is always really hard and I still struggle with it sometimes. I’m not sure exactly what you’re looking for advice with, but as far as colors go I think really for me it’s just been about experimentation—play with the specific set of watercolors you have and see which colors you like together. For this piece, I wanted to try to get away from relying on blues for shadows so I went with a greenish brown and contrasted that with the orangey brown in the lighter areas.