Joan Hutter asked about the mask pattern that Nancy Ota has been using, but I don't have a contact for Joan.  So, I am answering here how to find  the pattern, which is not Nancy's original but one from Dora Cary of Orange Dot.com  If you go to www.orangedotquilts.com there is a free pattern you can download.  

Stay well.  Del and KoKo