Feedback on facesets?

So I am just starting to learn this stuff. That piece is artistically pretty crap, obviously, he is bland and weird and yeah. I am just working on the techniques though, so what do you think so far?

EDIT: Daymn, that mouth is ugly. Ignore the mouth, it is an error.

It all realy depends on what your trying to achive with these faces, i feel like theres little definition of where the chin ends and the neck begins, maybe a crescent shaped patch of darker skin? Other wise they have their own unique style. Oh and expermint with thin edged borders, they might improve.

It all realy depends on what your trying to achive with these faces, i feel like theres little definition of where the chin ends and the neck begins, maybe a crescent shaped patch of darker skin? Other wise they have their own unique style. Oh and expermint with thin edged borders, they might improve.

True,
true
I will try to do that.

What do you think of this one?

I think that I couldn't do any better, so I give you a thumbs-up

What is that third face supposed to represent though?

I like these ones better, If i had to nit pick id say that these ones lack some sort of shadow under the hair, then again,s ince its from a front perspective it might not be required, keep up the good work

Thanks to everyone. I think the hair clashes with the rest in style, so I think I will work on that some more.

The fourth face represents some kind of weird happy emotion I guess.