Eva Shock was inspired by discussions in the 2004 online tatting class of Romanian point lace (RPL) and by the elements of designing. Here is her butterfly pattern with split ring tatting and needle lace.
This is an interesting exercise in diagramming and writing patterns. An antique German tatting book which has only photos no text, "Die Schiffchenarbeit" offers a challenge. This pattern uses the onion ring tatting elements so often found in antiue patterns.