Now that I’m happy with the colour palette, I just sample from it and start repainting everything little by little. The key here is to adapt it so that the values aren’t destroyed. At the same time, I start adding light. I simply define the area I want the light to come from, pick the value that’s there, and add more brightness and a bit of saturation to it. You can also do this by sampling the colour, then painting it on a layer set to Screen, Lighten or Color Dodge. Again, depending on the situation, the Dodge tool is also useful.