

1. Download 
2. Double click file (or) Unzip to - Adobe Illustrator\Presets\Brushes
3. Draw circle or whavy type line
(squares and sharp angles may require a little extra work to get them to look right )
4. Apply bursh of choice
5. EXPERIMENT with "opacity, blend modes, stroke" size, direction, color, etc...etc... to get the look you want

--- Thanks
http://r2010.deviantart.com/