The Art of Displaying

I have a room that I want to redecorate. It's the 1st room you see when you walk into my house and it is lacking a "wow" factor. I know everything I want to do with the room, but not how I want to arrange all the framed pictures I have. There are so many, and each I love more than the next one. Right now, most are "leaning" on floating shelves, the rest are in boxes waiting to be displayed. Here are some ideas from Domino.com

I especially love this look for my teenager daughter's bedroom. So sophisticated.