just spent stupid amounts of time trying to make blood in photoshop... finally resorted to drippy paint brushes and messing around with layer styles... memo to me: next time, buy real fake blood ;p
Great and fav! Do blood with brushes on a separate layer and warp or puppet warp to fit. This way you can blend and adjust layers as well. Much cleaner than paint, water color, toothpaste and whatever.....
I'd have just got red paint everywhere. ;)