This room was done by Jessica Jones over at How About Orange. The before picture is a study in beige. She did a few simple and inexpensive things and made it look fabulous. I love the idea of stretched fabric on the walls. What a great way to adore your favorite print. (She added a tutorial for stretching your fabric on a frame.)
She painted the tree on the wall and then hung leaf pictures. How cool and 3D is that? However, if you are terrified of trying to paint the wall yourself, I keep seeing wall decals on design blogs lately. Elly Nelly offers self-adhesive decals on their Etsy shop . They are a mother/daughter team and I like their designs a lot. They range from $25 to $65. It appears that you can choose from one of 14 colors for each design. And don't forget you can hang things with your wall decals to add more interest.
Go forth and decorate!