>>6028351Thumbnailing, then blocking in the shadow of skin shouldn't take too long, then you add in the bounce light, then you work on the mid tones on the shadow, then the mid tones on the light, then the occlusion, then subsurface scattering, textures, detailing highlights. On average 1-2 hours for each of these, some are pretty fast while others take a long time depending on how realistic you want it to be. Repeat it for everything else on the image. Using the same palette you're used to helps speeding up things a lot