This has been an interesting project. The original 325 piece longhorn puzzle <link> would have made a long animation, not to mention, take a long time to load.
The puzzle was drawn by hand. I used no plugins in the creation process. The image is from a photo I took in the early 80s. The puzzle grid was the result of experimentation. With some thought any number of shape styles can be used in the creation process. The grid was hand drawn without a plugin to make it unique. I don't have anything against plugins, I prefer to know how things work. After all, until recently, it had always been done by hand.