This model looks like something I'd expect to see in one of the Sly Cooper games.
Though I don't know much about modeling yet (very much a noob modeler), looking at the texture, I'd want to make sure that the textures on the longer parts of the robot don't stretch out too much; it makes it look like the grains (wood on a robot? How earth friendly!
) are going in different directions. It's alright, but I think it would look better if they appeared to all be going in the same direction. Or, you could try to create contrast by using slightly different colors on different parts of the model, to make the robot look more "patched" together, like someone took whatever they had to make him.
So, there's my two cents!
Your error is my treasure. =^--^=