My walls are empty, so I want to add photos or artwork on the wall (or both?) without it looking over done. I was planning to add a collage of family photos above the fireplace. For the dining area I want to add a huge art piece and the wall in front of the fireplace I would add another huge art piece. For the wall across the dining area (entrance way) maybe something small like three little mirrors... Need advice on how to dress my walls....