Overall, I like it - and am impressed by your modeling and rendering skills. But the shininess of the bracket seems off to me. I’d expect a well used globe to be accompanied by a green patina on the brass.
Had the hardware been less - shall we say “shiny” - I would easily have accepted this as a photo!
I prefer the original stand color, maybe with a little reflectivity and less diffuse.
The crucial element would be some reflected light, helping to show off the texture on the globe.
Then an interesting desk, and ….
I agree. The globe was illuminated head-on so it doesn’t have a natural look. Here’s another variation where I spent a little more effort …
Not asking too much, but how about a steam punk base and an animation (I’m thinking the Pixar lamp)?