Roboraptor

It is more like a sketch, so it can be developed into more serious and difficult drawing later. As a fan of mecha monsters, I would say you had drawn mecha parts of the raptor robot good enough, but you could make its paws being more sizeable to show strength of claws as the first. As I mentioned above, it is more like a sketch, so as a further development of this artwork you could draw more lines for tail edge, as well as work with a mouth a bit, but the work overall in terms of mecha parts is good.