Josie, first thing you need to do is: DECLUTTER!! Post new pictures of a neater room showing all 4 walls with the measurements.

Here you go ; ) much cozier and no money spent.

You've got a great start --- I like your colors. The first thing is to tidy up. You appear to have a lot of space on your upper closet shelf, so I'd get some clear bins and put stuff there.

My guest room is navy with a dusty pink rug so I appreciate your color choices!

A larger tv would help you see it from your bed.

Can you turn the bed so the foot of the bed faces the dark wall? If so, take down the items pinned to the dark wall and wall mount a TV there. Get some help with friends to organize and contain items on the wall, only essential items should be visible. folders or notebooks for the other items. I would recommend a larger, better quality full-length mirror, you want to see your whole fabulous look.

great project!

Lamps are way cozier than overhead light - hit facebook marketplace, target etc for some larger lamps you like - will make a huge difference

be ruthless re: what you need vs what you dont - aka do you need a desk?