This is great! I really love how you rendered the contraptions(?) on her arms! There's a lot of nice simple detail - I really like it! And I totally get what you mean by keeping rendering simple/not over doing something - I think you've done a pretty good job of that!
One thing I could suggest would maybe identify a solid light source? It looks like you have a couple light sources that almost contradict one another in a few ways? There's just a few shadows on the clothes that I don't think quite work? I could be wrong tho! I'm no professional lmao
Otherwise!! This is looking super nice!!! Your work is so large and lovely lmao i really adore it