Hm. They look fairly good -- I think I can understand the emotions they're trying to convey -- but I can definitely tell you're going for a "subtle changes to the base model" style. Which is understandable, since it's easier, but I think the changes might be a bit too subtle...when nothing but the eyes and mouth change, it looks kind of unnatural, you know?
But eh, what do I know about art. Overall the models look gorgeous. (Though I think Laine's eyes may be a bit too small...? Perhaps the largeness of her hair is just throwing me off.)