To begin, if you don't already have it then you need to get this awesome program called inkscape. It's a graphical design program that allows you to do all sorts of cool things. I actually came up with this idea while messing around on inkscape. To download inkscape just fallow this link http://inkscape.org/en/download/
or if it doesn't work just look it up on your browser (CHROME FTW!!!) and go to the downloads tab and find the appropriate version to download.