Treadheads Movie Poster - WIP

This was my end year project for the Cartoon Character Design class (the class that originally spawned the Treadheads ^^)

I had fun doing this for the assignment, but theres still lots of details to be added in to complete it as a whole; the shadows for the barb wire sticks, some lighting for the background tanks and whatnot. So technically, its a WIP but I'm mostly done, so comments on how to improve it would be nice~ ^_^