Ancient Robot ... C&c plz

Ancient Robot … C&c plz

Are you using principled or diffuse shader?
The orange tubes look bad.
Also, spider web should be more subtle. Are those rendered or is it alpha-mapped image?

Clay looks a bit plastic - you need to add some micro texture to them, maybe noise - even wet clay has some kind of very fine sand-like texture, whereas plastic is just smooth. It will look much better with that texture.