Good job. I like the textures in the background. Snake Eyes looks cool and I like the various components on his outfit. I think you could have worked out his right leg and the foreshortening a little better though.
I like Scarlett 's pose, but I think you could re-work the face. The rendering could be tightened up a bit. I'm only guessing here but I imagine you might like Leinil Yu? I know he likes to render his female faces much more than others. It takes good knowledge of the face structure to pull that kind of rendering off.
Anyways, I like what you did and thanks for sharing it here. I hope you don't mind the critique either.
Take care,
Jeremy