I don't think this is thread sketching the way the term is used in surface design but this is a sketch done with thread and a needle.
I threaded the bobbin with metal thread (thank you Margaret for your wonderful workshop). I did the sketching on the back and the front is the bobbin side. I like this. I am now working on four or five new Erics all with different techniques. I keep thinking I'm done then I find more and more ways to express this motif.
