*shouts* Hey they kinda resemble SS (this is the best way to make a soldier look evil you broke the code).

I remember these they look very nice indead.  So what is the plan, are you going to be finishing this into a game?  Or just picking up the graphics again.

As far as CC, the only thing I can really say is the pavement tiles don't seem to blend to well to the left in that mockup.  I would suggest breaking them up a little more with some transparancy so that you can see some more grass and/or dirt going through from the other tiles.  Your a smart cookie so I'm sure you get what I mean despite my rather poor explanation.

Well I cheated and added an extra shade, but it was a 5 minute edit so I have no doubt you can get practically the same effect whilst keeping the original colour count.

A partial edit showing how I would go about expressing the fur texture (main area being dealt with is the torso)...

It really is just re-iterating the point that areas with extreme light or extreme shadow show less details then the mid tone areas.
Also I second the point about background being fine, the point about detail I just mentioned plus it isn't the main focus of the piece are my main reasons for this. Also the last thing you might want is for it to look too cluttered, detail is one way of creating contrast in a piece so keep in mind that contrast distinguishes background from foreground.

Time to reveal what I've been doing every now and then in my free time.  These are some characters I have been working on, how far I intend to go with them is still up for debate if your lucky you will be seeing animations after I finish off the last of the details on the current ones, but no promises at this stage.

This is the main character of the set, his name is Crunch and I developed the character years ago, his design has undergone some extensive changes since then however (purple didn't seem as cool when I was 11). He is still in need of a fair bit of reworking of the guns and limbs.

The first character in this set was intended as a boss, but I am looking at scrapping him at this stage. Blue thing (Blue Ink), Red thing (Red Ink), Tongue Gunner and crawling Pink thing are all finished. The first green chicken thingos gun needs work, as does the seconds. The giant monster with dude riding is a boss again, the chair and gun are really the last few things needing work on him.

Thought it was time to get feedback, see what people think and get some idea where to go from here.