snow ahh darn >>; It's just a random speckle brush but with some fuzzy blur, I don't know how Gimp's brushes work, but I think you could make one with a dot, duplicate layer, and blur it :)
Every single mare in my barn is up for brood 178 Send me a link, an offer and we can go from there! Not expecting a whole lot as I just want them to be used :)