Using Complexity Vector Brushes for illustrator
Load the vector brushes by clicking on “open brush library” within illustrator
Draw a circle or a square or a line using paintbrush or pencil tool
Select the vector brush you will like to use and adjust stroke width change the color as you like .
PS: you can expand the design later and scale it to any size without loosing the LOOK of your final outcome

compatible with CS2 or above

Installation:

Unzip the File. for installing symbols click on the small arrow icon attached to your symbols pallett Select open symbol library browse to your file and open . Same way you can open brushes library.