Ok so I will try to make constructive criticism. Don't take it too seriously or to yourself. I know that this work isn't easy at all.
So let's start with Vic. As few people said before, his skin is too bright and reflect too much of light. Also he looks way too clean for a trader travelling through wasteland. Make his face a little dirty, skin darker without light reflexes.
Also his hair colour need more tones. Human hair has realy many color tones, from bright to dark, so you need to work a little on it. Also his hair is too dense: they are short but still you can't see skin underneath it. It's not realistic.
His clothes... Well I think that shirt just doesn't fit there. I think it should be more like this:
[spoiler:2719558b39]
[/spoiler:2719558b39]
But ofcourse dirty, maybe with some holes and stiches on it.
The vest should be like mechanic vest, with lots of pockets and other stuff. Something like:
or
I will write about other TH's later, when I will have more time.
[EDIT]
OK, I have some time now, so I will say something about CA girl.
Well first of all, I think her nose is little too big (too wide?) and she is a LITTLE too pale.
About the armor: Well, you should change the texture a little. It should be some "colouress green", or "green with lack of color" ;P
And I guess it shouldn't reflect so much light .
The helmet has a little bad shape. Should be more like nowadays bullet-proof helmets:
Also the visor should be changed. Now it looks like a gogles, but it should be more like part of helmet visor. Something like this (but with smaller visor ofc):