So my other Supernatural ponies [link] were well received, and I decided to make something with them that was a little more exciting than just them standing around motionless.This is Sam, Dean and Cas pony preparing for a demon invasion. Sam is pouring salt lines and Dean is painting a Devil's Trap for any demons that get past the salt lines. Cas is keeping a lookout!~~~~I cheated a little, and re-used some of the vector parts from my other pony art resources(which included some vector traces of screencaps), as well as hair/accessory/cutie mark parts from my previous Supernatural pony art.The background was COMPLETELY from scratch, and seriously hard, because I hate hate HATE doing bgs. I hate designing them, and adding details, and I hate perspective and choosing colours and basically everything about backgrounds. So, here's hoping I did an okay job and didn't suck it up too terribad.Everything was vectored, except for the lighting effects, which I added in Photoshop afterwards.Rough sketch is here: [link] It has been suggested by Tesseract27 that they should be called Sam and Dean Whinnychester. That is amazing.Also, here is a gag image based on this pic: [link]