One of the best ways to change the design of a room, is to add an accent wall. The easiest way to accomplish this of course is to paint one wall a contrasting color. Other ideas... apply antique wood, by either using an adhesive or simply nailing into the studs. You could also create a faux brick wall by using brick veneer tiles, you can apply stone, metal, even fabric!
Here is a Qwiki video of just what I mean!
Licensed home improvement contractor Brian Kelsey can be seen and heard regularly giving out advice on an array of media outlets. Hear him co-hosting a daily 4 hour radio talk show, live and nationwide from 7a-11a eastern on "Martha Stewart Living Radio" on SiriusXm Satellite Radio. Watch him on tv and on his how-to video series "Kelsey On The House." Connect on Facebook and Twitter!