/ic/ - Artwork/Critique

>>3713857
>>3713838
I'm mostly wondering about layer modes. No matter what combination I try to use I can't get it to look decent.

Have a look at this shitty example. It's supposed to be a red cube casting a shadow onto a blue floor. But if I do it this way the blue in the light area is way de-saturated, and the blue in the darker remains highly saturated. It doesn't fit with the floor.