I love symmetry in a room. It is one of the most important ways to finish a room. Without getting technical, psychologist theorizes that when images are viewed as symmetrical they are more appealing to the eye. It’s an easy way to create a beautiful room. Balance is the key!
A perfect example is this room by Interior Architecture and Design duo Joe Ireland and Julie Weber of J.D. Ireland in Washington, DC. (sorry for the bad photo quality)