How to redo a teen room on a low budget?

I'm 13 and want to redo my room in a Bamboo Forest/Japanese style, but I don't know how to do it on a low budget! Please help!

Please give links, but if you don't wanna, ideas are good, too! Thanks and bye! =D
Update: @ SuNSHiNe, do you think you can check you sites again because every site you posted didn't work for me, but I'm sure they're good!
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