Has all kinds of free brushes you can download:

Link: Qbrushes.com

So you too can follow everyone else in style and substance for that not YET dated 21st century style

You too then can paint with light!

Below was achieved using special magical powers... well, not really, go learn about 32bit, then go play with 32bit in Photoshop and think in terms of light and wavelengths instead of that old fangled 256 levels of RGB your brain has been likely used to for so long... so 19th century.