Glad to see you like them, Paul!
If you'll check discussion of my spitfire build, you will find lots of my
thoughts and sources of inspiration: Result | Album by rPenguin (1:48)
That was really cognitive build for me.
As for main things, that I try to keep in mind, are:
1) try to use semitransparent colors for modulation
2) use several layers
3) don't use black for shading (and mixing colors), only if base color is grey or pretty close to it
4) I don't like classic preshading, so I try to use a whole darker base and highlight it gradually, so there will be no strict boundaries
5) mix colors from close colors if you can
P.S. As for Miyuki, you can call it cheating) It's still diffucult for me to achieve this result from the first attempt
5. July at 13:25:22