This brilliant mockup before you is a fine example of how a creative design style can easily turn a piece of graphics into a multipurpose design resource. In this case, based on what you need to present, this neat grid-style arrangement of vertical panels can be a flyer mockup presenting a bunch of your flyer artworks for your personal or business purposes.
In another scenario where it’s an app screen display design that you want to promote, you can just insert your digital display graphics. This way, it will become a smartphone mockup showcasing your app or even website designs in a modern professional manner. You get the point, right?