>>13590621. Table to face the window if window is facing north/south, otherwise face the wall. You want some sun but not directly in your face such that you can't see what's on your screen.
Though, if there's nothing to see outside the window you can leave the blinds on all the time and keep the table next to the window like you're doing right now, regardless of window direction.
2. Agree with
>>1359208 , instead of several fake plants just get a real one.
If you want cozy, ditch that modern lamp for a more traditional looking one (dig up one at your thrift store or something). Put a warm white bulb in it. Put a table runner across the table below the monitor. Definitely change the carpet to something that's not modern-looking trash. If possible get a proper ceiling lamp instead of a dangling bulb. Change that bulb to warm white too.
3, 4. If you already own posters you want to put up then go for it, otherwise you don't have to buy new posters just to fill up the wall. Leave some space for when you actually find things you want to put up. If you're really suffering from horror vacui and want to fill up the wall, run your favorite pic through
https://rasterbator.net/ and put it up on the left wall (where it's visible from your bed).
For non-residual mounts, look into Command strips and hooks, or blue tape if it's unframed.
5. Do you get out of bed from the side or from the front? If from the side, move the dark brown shelf flush to the front of the bed, otherwise move it to the side in #4.
Ditch the small drawer and box and get a proper chest of drawers and put it where all the storage units were in #5.
In general try to go for quality over quantity. Better to have just a few things that you really like than to plaster the entire space with so much stuff that you'll throw most of them away when you move.
