Evil Skeleton Skeletank with Laser Cannon Cartoon Character Sketch
![Evil Skeleton Skeletank with Laser Cannon Cartoon Character Sketch](http://coghillcartooning.com/wp-content/uploads/2014/10/Evil-Skeleton-Skeletank-cartoon-character-sketch-Coghill.jpg)
Go Media has a free skull reference photo over at their blog. It features a human skull at 15 different angles in one high-resolution Photoshop file.
A perfect resource for running through some Photoshop filters or as a reference for tracing. head over to Go Media to download the file.