I don't know how to decorate my room?

If you are worried about adding color, you can do one wall up with color and leave the rest white. For something a little less permanent that paint, try one wall of wallpaper. Wallpaper is huge right now, and doing one wall won't overwhelm you entire room. Find a bold pattern with purple touches if you can.

If you have white walls, you can focus on your accessories to liven things up. Make a corner of your room into a hangout by adding bean bag chairs, a magazine rack, a place for your iPod, and pillows to relax on. You may want to add a large shag area rug to your floor for a comfy touch.  An area rug like this Plush Element Shag area rug would be comfy and cushy to sit on.

Add accessories to your walls to take up blank space. Mirrors are a great addition to make a room look larger and add some life. Photos of your friends and family look great in picture frames, or you can buy the re-stickable wall decals that look like frames.