Hi Robin, hope this is the information you are looking for. Leather Plant Hanger: 5 Steps (with Pictures) - Instructables
The basic idea is to not completely cut out circles so the one piece of leather stays connected with each ring. draw a circle of four and quarter inches in radius with the compass. using a ruler, make notches every half an inch. draw with compass the cut lines for every ring.
I really like this one. Its simple and clean
#1 was very popular back in the 60s, I used to make these for my over-sized hanging candles. You can get used leather coats at the thrift store for large pieces. https://www.youtube.com/watch?v=GldXUtUOBXA
Good tip from Sharon for a source of inexpensive leather- thrift stores.