Whoa, that suit fabric is made of nothing! (Which is not necessarily a bad thing!) I love the little wrinkles at her ankles, but as I've seen others comment, it just needs a few more elsewhere. It's got the feeling of being literally painted on... I'm having trouble imagining how she'd even get dressed in it. Unless of course, it is sprayed on latex or something 0_o
Continuity is being broken with the fabric consistency, it stretches over the top of her boobs, but sinks into her butt crack? (and under her boobs, for that matter). It just doesn't behave uniformly, it's very distracting. Just smoothing out some of the fine details and skimming over deep creases will help give the illusion, without detracting from her silhouette. It's all too easy to think of Zero Suit Samus being literally naked, but... well she is fully dressed. Give her that dignity, at least. Or spray it on completely! Choose your extreme and go for it. Either she's naked, or not, because at the moment she's essentially naked except for her boobs. Just being painted blue doesn't mean she's dressed. I'd never leave the house to stomp space pirates with my vag hanging out like that. Just saying.
Forgive me, I'm in no way taking a dig at your skills. I just geek out over Samus. She's one of the best female role models in games.
PS, The texture is jagging like crazy over her butt. If you wanted to keep it so detailed, you may want to give it a little more texture space. I'm pretty sure people will be looking there, it's the most detailed spot on your model at the moment.
It's going nuts on her boobs, too, but not quite as badly.
Now for some constructive criticism: -The eyes are too far apart IMO. -Her skin color should be brighter. -Her back is too concave. -The crotch area seems flat. -Needs normal (bump) maps badly. As far as I can see only her hair has them. -Needs shaders to adjust specularity of her skin(it's too plastic), hair (looks really dull and unnatural) and the suit (needs to be more shiny)
Well, that's all the issues I found. Hope I helped you.