A great place to find original affordable art is Etsy. Most often when we are pulling a design together for a home we are staging we begin with the art. It is delivered to the pillow department (that makes our company sound sooo large!) and the design unfolds.
All of the art and pillows are available for purchase. Simpy Click & Shop!
Now for the throw pillows: My sister Tara's rule of thumb is "Solid, Texture and Print". She passes on that tidbit often when she is stopped at her local shopping haunt and asked for advice from other shoppers.