I started designing one of these based on the character sheep in the 3.5 Player's Handbook on paper a few days ago. I'm probably going to sketch out a few rough ideas for a 5th edition one, and then transfer it to my PC to do an SVG version.
I've no idea how to do make one as an editable PDF but I'll look into that when I have the design solid first.
My main end goal with this is to make it scaleable as either a vector or a PDF.