Stylish, elegant, functional. These design elements actually convey a concept of a need and need fulfillment. The recessed and raised appearances of these frameworks can also help you illustrate with the help of some animation the concepts of emptiness/fullness, vacancy/occupancy, open/closed, and others. View the animation to see how these work.
Photos look "finished" when placed under these bevel frameworks. Photographs were selected, sized to a rounded-edge square graphic, and imported into the graphic using this technique. Then the bevel is simply placed over this newly made graphic and grouped. Done! The look is very polished and professional.