Choose where and how you will display your photos and stick with that plan. Keep in mind size and scale! For a staircase gallery, decide which size photos can be grouped most easily and allow for future additions. If you are working with a tight grid system, know that it’s probably best for you to switch out images with existing ones instead of trying to expand the grid (unless you have the wall space to do so). If you are mixing sizes and styles of frames, ensure that your foundational layout allows for the addition of different-size frames without making the arrangement seem out of control (a more free-form grid system works best for this).
Eclectic. When I think of most gallery walls, I think of an eclectic mix of modern art, old photographs, small prints and random items. Our personalities are so multi-faceted that the gallery wall becomes a reflection of everything we like and want to share with our visitors. Anything and everything can make the cut in a colorful and mixed collection of interesting images and objects.