blog, or you can buy the whole pattern in her Etsy shop. Mine is tatted in Coats thread size 40.
When I was working on round 10, I realised that I had made a mistake in round 4, and as a result was one repeat short. The number of repeats doubles in round 11, which would compound the problem. Rather than correct the mistake or carry on regardless, I decided to invent a finishing round and leave it at that. It measures 37 cm across, not a bad size for a doily.
If anyone notices the mistake without being told, I'd say they haven't enough to do!