I think my colors are becoming more solid, but I'd like some tips on how to render with these more distinct color layers, and I'd also like some feedback on the 100% black shadows—how they're positioned and distributed.

I think my colors are becoming more solid, but I'd like some tips on how to render with these more distinct color layers, and I'd also like some feedback on the 100% black shadows—how they're positioned and distributed. | Artwod Feedback