Awesome! Something you could work on some more could be the glass material with the cases. Maybe try to explore the possibility of adding some smudges, or something with a little bit of variation with the roughness map. It might be cool to add lights or lighting fixture inside the cases, or at the very least maybe work on the overall general lighting so they're displayed more prominently. The other thing that's bothering me is the framed pictures. In your first pic the picture on the left has some strong vibrant colors and values, (it is more vibrant than the entire environment) and really sticks out as being out of place. Your other pictures look older. I would try and be more consistent. And from the 2nd pic it looks like you have 2 pictures of the gentleman with the hat. Maybe it's just a placeholder? Cool scene though!