I worked on The Powerpuff Girls from 1999-2000. I didn't work in-house during that time but would come into the studio as much as possible to run these thumbnails past Don Shank, who was the Art Director. Once he and the directors approved them I would do more finished keys based on the layouts, which would then be sent over-seas. It was a lot of fun.
Layouts by Dan Krall
All various sizes
*ALL ARTWORK COPYRIGHT CARTOON NETWORK*