in the nsfw wip, her right arm looks very strange- the darker coloring, probably meant to show shadow, is too dark, and appears too fast, and makes it seem as if the hand is disappearing, which would almost work in such a picture except the arm is still too large. Maybe make it a lighter color, just a little bit, would help.
I seem to have a slight problem with the little bit shown of her left shoulder. Maybe it's too bright a color? I don't know, but the perspective doesn't look as perfect as it should be.
For the next picture, I swear that it looks moderately manga-ish, particularly eyes and mouth, which is missing the bit of mouth realism you usually put in.
For that reason, maybe I'd recommend the right "man" hand to be a bit sharper. Check out some anime/manga female hands, cause it feels perfect for what you're trying to do.
The thumb area on that hand is totally off just a tad too. It feels a bit square, not right for the small perspective. It would probably look like that in real life, but for this caricature, maybe something else would work- in real life, there's a fair bit of shadow to make it realistic, but obviously, it's missing that shadow here, and adding too much coloring/shading takes away the caricature cartoon yet serious feel you're going for.
I think right below the cuff on the same hand it starts to feel 2D-ish, until the hand comes.
The area right below the chest, where you see the bend of her back, is a bit sharp, and makes me feel like the upper body should be a bit leaned, but it's obviously not. I'm pretty sure the same thing's happening for the previous work, but it doesn't feel as rigth here.
Other than that, all the work is exceptional as always dude. Amazing job.
/jealous