Refillable insets are to be paired with WUDscapes frames that slide in and out of the wooden frame channels. Insets contain three layers of illustration board that can be colored with any medium. Be sure to pair the proper orientiation with the corresponding frame, either landscape or portrait. Start by selecting a WUDscapes set that includes the frame and inset, and then add as many additional insets as you'd like. There is no wrong way to color the panels, or they can be displayed as is.