For today's daily art challenge, I drew a few simple geometric shapes using gray markers in three values. These shapes were then imported into Photoshop and each shape was turned into a brush. I ended up with three circle brushes, three triangle brushes, and three square brushes. I used these brushes to stamp a pattern with four layers; a background layer, a layer of circles, a layer of squares, and a layer of triangles. Each layer of geometric shapes had an overlay filter applied to it. By changing the background colour, the same pattern can be seen but with subtle variations!