I NEED HELP PLZ WITH THIS ROOM?!?

Hey guys, ok so my bro has gone to australia for a year to live there so he'll be back in a year and my mum said i can have his room untill he gets back :) ive always wanted it coz its bigger than mine and i sleep in it coz the bed is comfier than mine but i wanna change it round and decorate n stuff :) he said i could decorate it and re-arrange but just not pink or anythin lol so i cant change it round to much but i was wondering what are some good ideas to do with the room? its not very big its still a little bit small id say mediumish size so i need some GOOD ideas for what colour and some stuff to make if more ermm... ya know... HOMELY! :D thanks very muchh! :) x