Creating Custom Brushes

I first did some research to get some ideas for texture. I then decided to make some custom brushes out of sand, ocean, steel, clouds, tree bark, metal, glass, and fire.I first found an image and then i selected it with the marquee tool.I went to edit, define brush preset, and then i went to the brush panel and i chose shape dynamics, scattering, and texture and i moved the controls until i was satisfied with the results. I did pretty much the same thing with the other seven custom brushes.