Tutorial: the Weathered Penny

So many people have asked about the weathered penny, that I thought I'd share how I do it, this time with pictures. (No Tachikomas in this one, unfortunately,they're still sleeping off the effects of their victory party).  Above are the materials you'll need, including the flat brush (available at any art/hobby store) and mini/tray grey foam. I realize that Citadel may have changed some of their