Bedroom ideas for a teenage girl?

I'm redoing my bedroom, and I have already picked out new furniture (white). My walls are pink right now, to match my pink and green bed set. I can change the color of the walls, but it would either have to match the pink and green scheme, or be a neutral color, which was my idea, maybe. My parents have an extra bedspread that is a chocolate brown, so my idea was to stick with different shades of neutral colors (tan, gold, brown, creme) for something sophisticated. Another idea I had was to take quoted and put them all around my mirror (quite big) but I don't know if thats good. So, basically any ideas or suggestions. Thanks (: