I would work on the female’s nose a bit, but I really like her forms otherwise. Even without skin/eyes I can tell that she’s attractive.
The girl in the new Prince of Persia movie (who is incredibly beautiful) has a very small nose without much definition (compared to most noses) but I still think you could polish it a bit. The nostrils make her look like she’d have a hard time breathing.
Other than that maybe focus on the skin pores, they look a bit unnatural at the moment. And the area just below her bottom lip.
But don’t take it the wrong way, I think it’s a beautiful model.