Need ideas on how to redecorate my room?

Hi, I am 13 and My sister is going to college and Since we share the basement I get her closet and stuff anyways, I would like to redo my room But I don't know how, I am planning on getting an endtable I want to redecorate but no like paint walls, Anyways I wanted to know some tips on how you would try this.. Lemme explain my room, I have on pink wall and a chalk board wall, that I might just paint over, I don't use it, I have a queen bed, a dresser and desk and another dresser in my closet (under the stairs) I don't know if i need the b ig black on in my room yet because I'm going to be getting rid of some stuff, I was also wondering, Were do you get like Cork Boards thx!