We love the curated look of a gallery wall. Mixing media brings out a mix of photography, art, and other textiles that liven up a room and make it really special. One way to approach it is to go the museum wall route, which is to make the outer perimeter of the whole wall a symmetrical shape-- a square or rectangle, mostly likely-- and keep your wall works within the border. This is a simple way to make it look uniform without actually having to size out frames, but it keeps a clean look. This way, you can finagle inches of difference, but the whole area keeps a strict shape. Museums, as mentioned, use this trick. It is like a calm to chaos and it gives an eclectic, but uniform look. Another way to dress up your walls is to actually keep it uniform. Use rows and columns evenly spaced with the same frame. This works well for our more particular and meticulous friends who love the idea of a gallery wall, but don't want to surrender to the mix-and-match kind of feel.