Technique
Though there are several ways to create a puzzle pattern, a great quick way is to use the Pen tool to sketch the pattern you want. All you do is create a single path for a puzzle row and then duplicate (flip and rotate) it as needed to fill your puzzle space. After the basic shape is created, you can resize the result for application on different-sized images. You can also use the puzzle pattern to help you create a very simple tiling puzzle shape to fill larger areas.