Teen girls bedroom design!!? so my walls are pink and lime green, i have almosts a...

so my walls are pink and lime green, i have almosts a whole wall full up with a big poster board with pictures of me and friends on it, my door have posters of guys and stuff, and then i have a slanted ceilling and i want to put something on it, but idk what! i dn't really want it to coast money. i want to do it myself. any philosophy?!

ps. i don't wanna paint anything.
Where can i carry decorations for a room.?
stick on mirror tiles (ikea do some honourable ones) would look great and make the space seem bigger

Are here picture hanger for use on a...
what my friend did was paint her ceiling with chalkboard paint--obviously tricky if u have popcorn ceiling, but if u don't and u paint it with chalkboard paint, you can buy chalk (cheap, purely like the paint) and write, draw, do anything with it.
Jcpenney..?
carry a varity of fabric and randomly paste parts of it so other parts hang down only a bit
Marketing my interior design business to Contractors?
Answers:    You could just get some crayons, pencils, paints, and things approaching that, and just draw your own things and pictures on your ceiling, that way it would be incomparable and there would be nothing else similar to it!!