I have a lot of open space on one wall in my bedroom. I was thinking of a very large picture to really make an impact, but don't know if it will be too big in the room. The room is 17x12 feet. It would go on the 12 foot wall space. It also has a window to the far right. Under the window I have a chair and small table. I could go with a grouping, but do love the look of a large piece. Any suggestions?

Thanks!