Open your windows!
Add mirrors on your room. It makes it look 2 times larger because of the reflexion.
Keep your room clean. Keeping your room dirty will make your room look smaller.
Put some cards that your friends, family got you.
Put some stuff that you like.
Add some stickers!
Have a comfy spot in your room.
Add more stuff that you like.
Add a bookshelf.
Add some bags
Add a desktop.
And a chair.
Hope you enjoyed my article. If you want more suggestions, please ask!
The creator of this guide has not included tools