Simple progression in creating abstract brushes. First shapes than masking and erasing. After that mask and distort than a simple transform of perspective. Lastly a simple distort of the second abstract brush with the polar distort function. I created these in CS6 at a much larger size but reduced them so the brush file could reduce to download. In most cases once I start I can from a simple shape make as many brushes as I wish. As can anyone. Enjoy and hopefully any newbies to photoshop can see how I created these abstract brushes and begin the process for their own unique brushes.