FIll out the wall

[topaz lynx]

Yeah I would for sure put some lights like nanoleaf or something similar you could make some crazy cool designs on those walls you got enough room

[patent inlet]

Get a rug that acts like a wheel mat to save your floors.

maybe center the shelf so its centered with your desk?

And then some art work for the wall behind you.

Honestly if you could find lighter colored shelving and desk, it will lighten up the room a lot more.

[lethal ginkgo]

behindmonitor lighting is a must !!

helps for strain on eyes and also just looks better