Boingboing posted a link to Photoshop Roadmap’s 70 Horror, Blood and Gore Photoshop Effects and Brushes, a round-up of how to’s offering myriad ways for you to grossify yourself (and others). Now, instead of a few veins, blacked out pupils and a scar or two, you can look like you were skull-fucked Satan’s Ugly Stick itself. Massacre your mug right here.