Decorating My Bedroom Advice?

Ok, so i'm a 14 year old girl and right now i hate my room, it contains a huuuge wooden desk, nice wooden draw things, a wooden wardrobe and a wooden cupboard by my bed. The walls are white & white opposite eachother and on the other 2 Pink & pink. I want to have like a 'feature wall' with cheetah/leopard print wall paper, but with 3 diff colours not 2 if that makes sense? So thats the first question.. does anyone know anywhere in the uk where i can get that? ok second question : is it expensive to change carpet to white floor boards? because my carpet is purple so it clashes with everything. I want to make all the other walls either white or cream but not sure which? & also, im going to paint like all the furniture white, so should the walls be cream or white? & also, does any body know where i can get leopard/cheetah print curtains or the material to make them? & also leopard/cheetah print duvet cover, sheet cover etc in the uk? Please help?