Studies of light and color to be used in my webcomic "Seed"

I've been trying to come up with a lighting method that's easy to reproduce and fast. These are the results so far.
I've been trying to refrain from going into too much detail. The goal is to be able to render large quantities of images in relatively short time while still maintaining some standard of quality.
I tried the exact method (layer structure, values etc.) on some of the older frames. I'm not quite happy about the results yet.
I'll use the same approach in the later episodes with hopefully better compositions.

You can read all the episodes so far here!
Light Studies
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6,725
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Published:

Light Studies

792
6,725
28
Published: