Gallery walls are great to show collections of artwork and other meaningful items — and photos, too, of course! If maintaining some sort of order in your gallery wall is your thing (it will make it look the best!) just remember this one rule — keep something in common. Whether that is the frame or matting, subject matter, or the medium used in the artwork, if you keep one of these things consistent, you’ll end up with a more polished look. And if you decide to keep none of these in common, just remember to keep your spacing uniform throughout — an easy trick to avoid a haphazard look.