You can put it anywhere you want. It's not a part of Photoshop like brushes, they're just pictures. I keep mine on my desktop and use the Photoshop File Broswer (CTRL+Shft+O) to select what I want. And as for how to work it in Photoshop, go look at some tuts or just play around with it like I did. You have to be good at blending them or else they'll just stand out too much.





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