Awesome work! Can you take a close-up of that paint job you did on the head?
The only suggestion I would have from a diorama point of view would involve what I guess would be fairly major mods to the desk and lamp - in order to make the lamp's electrical cable seem closer to real scale you could run one of the wires out of the bottom of the lamp (rather than the side where it is now), drill a hole in the table top and then hide it by running it along the bottom of the table and down a leg. You'd end up being stuck with the lamp in the one position though, and have a hole in the table top if you ever decided to remove it so I doubt it's worth the effort, but still that would be one way of improving the scale on the power cables.