I made one for a friend and sent it off last week; wish I'd taken a picture first. But mine was even simpler than that! I figured my friend is about 5'6" tall so I bought 9 feet of fleece, figuring from the shoulders to the floor would be about 4'6". Folded it in half, cut a slit big enough to get her head through, bound the opening with bias tape. Then I stitched up the sides, starting at the bottom, left a large enough opening for her arms and that was it!