About 1/3 of the way in, when the kids leave the house to go trick or treating, Snoopy, "WWI flying ace" leaves the house and is saluted by one of the kids, (wearing a ghost costume), you can clearly see a yellow sleeve coming out of the sheet. Charlie Brown was the only kid wearing a yellow shirt, the problem is Charlie Brown had a bunch of holes in his sheet (said he had trouble with the scisors), but his sheet now only has only 2 holes.