The things that jump out to my eyes are the internal window frames, the hovering work stool, the sharp edge to the carpet and it’s lack of texture. (And the ingoe at the back window, and the missing window frame)… but I’m picky
You can call the texture “grass carpet” and it would pick up the keyword, but you would need to scale up everything by a factor of about 8 to 10 (I’m guessing). If you need to keep the scale I would just apply a noise texture as a bump-map.
Nice! I’d suggest to change the metalness of the chair. The reflection looks fake to me, I think usually these kind of chairs are made of plastic or wood (metal = 0).
Just realized your were probably talking about the “metalness” of the big gray chair… I only adjusted the stool… I 'll get another shot later with the proper look on the chair.