Not bad; my first instinct is to tell you to smooth it out, but I know that tanks are tricky builds and I also haven't seen any reference pictures. I also don't want to say that this has potential, because no one likes to hear that.
If you want to use a camo look and get all the details in, just be careful. Control every part of the model and know why each piece is where. For example, some tiling might go a long way to make the body look more coherent.
I know this probably doesn't make any sense, but I'm just trying to be helpful. :]