Hi- My wife and I are setting up our dining room in our new house. We have a wall that is screaming for an art piece. The measurement between the edge of shelf and window is ~62 inches. The height of the window is ~66". On that wall...(1) for orientation..horizontal or vertical? (2) what range of size art piece make sense? (3) On the wall, how should we position it (ie...like, 6" from top of window frame, in line with top of window frame, etc). Thanks!!!!