Start by deciding how many skewers you will use in each direction and call that number n. I recommend using n equal to something in the range of twelve to sixteen, up to twenty at the very most and only if you are ambitious. Cut two long strips of heavy paper and tape them together to make a double-long strip. Poke n holes in the strip, at roughly one-inch spacing, as shown above. This paper strip will serve as a temporary scaffold, and will be removed later.