From there, I choose local colours from the colour picker. I keep in mind my dominant colour. Colours closer to it can be more saturated while colours distant from it are kept neutral. In this way, colours shift according to the environment (Rumanye’s shirt is yellow but it’s brightness is drained away by the spooky pea soup environment).
I use the opaque watercolour brush to do my first pass. This allows some of the base colour to show through and further unify the scene.
Next, I add effects. Sometimes this is as simple as using the airbrush tool, but occasionally I use blending modes to boost the magical quality of an effect, for example.
And that’s all for now! I know my process with change again, as it has so often during this project!
ETA: I fixed the driver on the Cintiq. What a difference it makes, eh?