I'll start posting more images like this, they might be helpful. The standard approach for most illustrations is just lines -> base colors (on multiply layer) -> flatten and paint it out.
The base colors are most important, don't be afraid to go wild with them, lots of hue variations and experimentation.
Asher Tail
2018-05-21 04:00:16 +0000 UTCCherie
2018-05-18 22:32:38 +0000 UTC