A gallery wall is a great way to add color and interest to an otherwise bare wall, but it requires careful planning and some restraint in purchasing prints and frames. You want to make sure everything you purchase will fit on your gallery wall without creating unnecessary empty space or crowding frames together, so diagramming your wall as you shop for prints is important. It's also important to make sure that your prints flow together well and share the same general art style and that all of your frames match; frames that differ wildly in color or style will create a jarring appearance, detracting from the beauty of the gallery wall.