If you want to mark your design work as licenced under a Creative Commons licence and include the respective icons, you can download them as SVG, EPS and PNG files and even as true type font at creativecommons.org/about/downloads/. Since I often work with custom shapes in Photoshop, I created a custom shape set featuring all Creative Commons icons, which I wanted to share with you. These Creative Commons shapes are vectors so you can resize them without loosing the quality.