The settings and the elemap file for a grass brush in Paint tool SAI
Click on "download", then un-zip the files.
In the pack there is a tutorial on how to install the brush, the settings, texture and the "start-sai.exe" file.
I added a tutorial on how to install the brush, if you already downloaded the pack, but wish to read the tutorial I uploaded it here [link] Edit:
For people who are new to Paint tool SAI: This brush does not work like the "stamp" grass brushes in Photoshop. To get a result like in the preview you have to paint every single stroke individually, best method is to start at the bottom and go up in a quick motion, lessening the pressure so the tip becomes very thin Edit 2:
To make this work you need to have a tablet with pen sensitivity settings, it doesn't work with a mouse.