Piball

Description
Piball, or πball is a caveball that lives in Vixtaeball

How to draw

 * 1) Make a circle (as always, an off-hand circle)
 * 2) Make another circle inside the first one, one-third or slightly less of its radius
 * 3) Write the letter Pi in the inner circle
 * 4) Draw eyes
 * 5) Color the ball yellow-green, leaving the number mark white
 * 6) it's done