Are you anxious for a gallery wall but still waiting to inherit an art trove from an eccentric great-aunt who doesn't exist? There's no need for patience. With the help of online art vendors, you can build an affordable statement collection from scratch. As proof, I present my own project that I recently assembled in my bedroom. I already had a pair of colorful prints on one wall, so I decided to keep things simple for the new addition by focusing on black and white. You too can build your dream gallery wall with these four simple steps.