Here we go with the boring part of this illustration: flatting. In essence I’m blocking in color, or in this case, grays. Each major section of the illustration gets colored in with a flat color (hence “flatting”) and they’re each on their own layer. There are several advantages to this approach.
First off, I can adjust the tones until I get the atmosphere I want. And get the focal points where I want them. Second, having each element on its own layer makes the detailing and texturing steps a lot easier.
It looks sloppy but here’s the flat stage: