/3/ - 3DCG

>>476809
just by using roughness you're technically using pbr.
About the eyes: It would be more realistic to have 2 models, one for the inner part of the eye (this one is UV mapped and textured, it isn't ultra-shiny/wet like we'd think it is, it also has a roughness map), and the other one is basically a glass cover, that's what makes it look shiny. Look at my pic for an example, in your case you already have the inner part, so you'd just have to make the outer part, and since you don't need to unwrap it, it takes virtually no work.
About the body: I wasn't talking about the luminosity of the base color (but now that you mentioned it, it wouldn't hurt to raise it a little bit), what I was suggesting is that if you make the roughness of the body lighter, it will look less wet, but don't make it completely white, you need some contrast in there for it to be more realistic.