I found these instructions difficult to follow. I must admit my concentration isn’t the best lately, however Round 1 appears to have a printing error between “1tr into ring,” and “join with ss into 3rd of 3ch”. It should say 3ch (counts as 1 tr), 1tr into ring 11 times, join with ss into 3rd of 3ch.
I found the rest of the instructions just a little difficult to follow. I have been unwell lately so apart from a minor printing error, I think it is much more likely to be my poor concentration. It can be found in “200 Crochet blocks for blankets, throws and afghans” by Jan Eaton on p77.