I received many emails asking about the brushes I use.
Here is the set I give to my students. Feel free to use it as well. It is a mix of personal brushes and other artists's set, free of use.
I suggest that you ADJUST THE SIZE OF THE WINDOW accorded to the picture, to take full advantage of the set. The brush repeating itself is here on PURPOSE, to help classify the all thing.
This set was created on Photoshop-CC and works with Cs6 and Cs5 as well.
I hope this helps !
Just don't forget that brushes won't do the job for you.