The idea to show some brain came from an image on the internet. The first one I did was helped with a little white acrylic paint. After that, I began thinking how the brain would be exposed and that evolved into Mr. Zipper Head. Your ideas will evolve from pumpkin to pumpkin and my next zipper head will also have the white paint.

The pumpkin with the unpainted zipper was an 80-pounder grown by my neighbor.