I have made quite a few of these. They come together in just a few whiffs. Well they do after some careful dechifring of the Japanese explanations. I went with the 'numbers' - 40 cm here and 24 cm there - to make up a rectangle, and so on. I found the photographed pages of this Japanese book here. It went into my folder of favorite pictures, and I found it - rediscovered it as it were - a while ago. They make up lovely small gift bags. I tried my hand at smocking on my first, but it did not turn out well. But I have found it really does not need the smocking to turn out nicely.