It looks really nice!
You chose a nice color palette!
A few things I would recommend paying attention to:
the radiator is almost always under the window. It’s not a big deal if you do it differently since it is a stylized piece but placing it there it doesn’t make much sense and it doesn`t help with the composition as well, in my opinion.
the wood on the floor wouldn’t have rounded edges like this. If you want to show worn out flooring, the planks would actually be ‘carved’ inside, kinda like a boat (I hope that`s a clear explanation)
I would add a little bit more of the glowing dust particles:)
it would be cool if there were a few brush strokes on the canvas, or a simple sketch. It would add a little bit more to the story.
Besides that it all looks pretty cool!
Cheers!
The Space before Art takes a breath and inspiration becomes creativity. Anyway, I think it captures a positive moment in overcoming a creative block. Or it could be just what it appears to be, Beautiful.