Shopping for iPhone cases can be a difficult process. Which color, what print, who's brand—there are too many choices. But if you have the design chops and the artistic skills, Krizzl, a collaboration by Halfmann Mennickheim Design and Elastique Agency, has the platform. Now, making your own iPhone case can be easy with a simple three-step process, as demonstrated in the above photos. Customizable and convenient, what a concept!