Can you provide more photos of your room? If you have enough space, you could place your bed under the window, place bedside tables on either side of your bed with lamps will make your room feel grown up and sophisticated. Dress your bed with large pillows, comforter and a throw. Are you allowed to paint your walls? If you can go for a nice light colour to make your room feel bigger...mint, creams, silver would look nice and match your wardrobe, you can get some nice frames with pics of family and friends to make the space feel personal. A mirrored chest or dressing table opposite the window will be good for your personal products, perfumes etc, add a small vase with fresh flowers and a mirror above will reflect light and make your room feel bigger. Your fluffy cream rug would suit the new style too. Good luck!

I used PicsArts to make this up, I think blue would look great with the orange pieces.

Hi, I think that you have to find a line that you can align your larger art pieces on. Not sure how to explain it, so I've made a visual for you. I've put the two smaller pieces together, so they form 'one piece' and aligned the bottom of all large pieces and put the other smaller one between them to form a connection. A common line makes it visually calmer. I've also pulled your chair a little bit forward, to give it some 'breathing space'.

Have a Google for brass sunbursts mirrors, they are typical of Art Deco and come in a huge range of sizes and styles. Beware of so called art deco mirrors cast in brass with a female dancer in the frame, more Art Nouveau and they are mostly poor copies of the originals.