I started with a dark blue gradient, and then with a large airbrush started filling in the yellow glow of the sunset. Then I established the horizon line with a low-saturated brown, getting darker as I approached the foreground. A little more airbrushing and I have my very basic background; I'll use this as the foundation for now to set the light source, tone and color palette.
I began blocking in the figure’s silhouette, using a standard round brush, and again paying attention only to basic proportions at this stage.
I made some color adjustments to make the figure warmer, as the sun is low in the sky. I roughed in some shadows and highlights, thinking about where direct light would hit the figure. I’m still not sure about these skin tones.
After refining some of the inner forms by overpainting and using the liquify filter, I used Image > Adjustments > Color Balance and adjusted the shadows to a more blue/cyan. I think I’m happy with this overall skin tone palette, but I’ll still mix in some purples and greens here and there to mix it up a bit.
I then added the basic shape of the hair just to get away from the flesh for a minute. Some more refinement here: I noticed some problems with the deltoids; both were a bit out of place and too small. If nothing else I’m getting better about not being so “married” to the art and painting over something that isn’t right, starting over if necessary.