The woman/girl's face doesn't look very girly, she looks like she's got a flat nose stretching all the way to the right of her face (this may be because the girl in your reference pic is looking in a different direction than the one in your pixel art). She also reminds me of Mona Lisa for some reason. The guy's face is alright.

Though in general, I think the faces use too many colours for such a small size, it makes them look blurry (again, the girl in particular).

This is a fragment of what I planned to be a story (something halfway between a Russian fairy tale and No Country for Old Men) illustrated with pixel art.



Bigger version here.

It took me a surprising amount of time to create, and - as you can probably see - it includes a wide variety of rookie mistakes (the horn, in particular, is banded like hell, and I kept the original outline I used).

Anticipating criticism, here are some of my attempts at anti-aliasing. The first one on the left is the original (keeping the outline), the second one includes anti-aliasing of the facial features but not the horn, and the last two are my attempts at anti-aliasing the horn (admittedly, they're horrible, in part because I got tired and did a bit of a half-assed job).