ok!! so i had a quick dinner then broke it down into more detail

I think this is pretty much it for the proko project (like what he expects)
but just wondering, to add even more detail, is there any good way to do it? or is shading the next step usually for artists?
cause i tried looking for more detail to add but either is so minute of a detail that its just kind of hard to figure out how to implement properly without it just looking messy. or its such vague details that it feels like shading is needed to express it