I also am doing one of Edyta's quilt's this year- her pre-cut fusible appliques are not hand sewn- the fusible makes that quite difficult- in the class with her she showed us how she does a small blanket stitch - she uses aurifil or silk threads- most of us from the class are using silk thread- it is so fine it pretty much disappears and comes in a huge array of colors. I love working with silk threads- I've been using a light gray cotton in the bobbin. some of the ladies using aurifil are using the same thread top and bobbin. any stitch you like can be used. I wouldn't use a satin stitch though- it is way too heavy of a stitch and (in my eye) would take away from the beautiful appliques.