Overall I think you did a good job. Good job on the face and pissed look. The pose is a bit unclear as to whether he's standing or walking towards the viewer, at least to me.
Take a look at his left upper arm. I'm not sure if it's because the way you did the folds in the sleeve but it kinda looks like a 2nd shoulder?
Also, give poor Batman some room down there for his nads! Maybe that's why he's so pissed...
You are a level 8 ninja and even though you have a lot of weapons sometimes your ninja moves are your most powerful.