Geometric brushes

There are free downloadable geometric brushes you can find online, and these can be loaded into the brush presets in Photoshop.  Once there, you can apply these intricate designs into a black page or into some other image using the brush tool and then add color, distortion, gradients, etc. to enhance and embellish the graphic designs. Here, I added a Venetian mask, a reflection using the plugin Flood (made by flamingpear.com), an application of the native Photoshop filter extrude, plus several color gradients.  I like abstracts in and of themselves, but when you add a photographic element I think the images are made more compelling.