Eh. Just a setting I made for myself that I feel like sharing. Feel free to use and test it out yourself.
I use it to make bgs or extreme highlights on things like water. I think it could be used for hair and fur, though I haven't tried that yet.
Make sure you create an 'Airbrush' default before placing the settings on it. It works better as an Airbrush.
Larger sizes show more of the blunt edge than the smaller sizes, so when using larger brush sizes, I recommend quick strokes.