168 pieses, all of the same size.
Picture 1: A sample of the pattern.
Picture 2: Merge the pieces as shown. No. 2, 4 and 7 assembled to rings.
Picture 3: No. 1 and 2 are sewn together.
Picture 4: No. 3 sewn on.
Picture 5: No. 4 sewn on. Caution! 2 tips in each corner.
No picture: The bottom (no. 5-6 and 7) are sewn together. Caution! beware that it is facing correctly so that it fits with the top.
Picture 6: Top and bottom are sewn together.