That's supposed to be a monocle on Reptor, right? 2 things about that:
1. Where is the monocle supposed to be connected to? It looks like it's just kinda stuck on his cheek right now.
2. You might want to add some white/light gray inside the monocle because right now it looks like it's just a frame.
Besides that, maybe lower the hairline a tad and it should be good.
As for Mariette, the eyes aren't rounded enough, right now they're an I
shape and they need to be an eye shape, feel me? Add one of the lighter greens you're using to the sides of the middle, or around that area anyway.
Another thing: her breasts are pretty pillowshaded. I also have some reservations about that big blob of middle-green that you're using on her lower midsection, but take that with a grain of salt because I have never done halfbodies in my life.
yay I'm not the only person gallery posting