Originally Posted by
applique
I also use the satin stitch with the needle just off the edge of the piece and the majority on the piece. Drive the needle along the edge lifting the presser foot and realigning when needed especially for the tight curves. You can always do a second pass to smooth out an area if needed. Be sure to use a tearaway stabilizer on the back side of the background fabric as it will help control the movement and keep things flat.
That is a pretty cute fish!
It never occurred to me to try to keep the needle at the fabric edge and then into the piece. I probably would have just tried to center it the edge, but I believe you're likely suggesting this to keep it from fraying and to help maintain the shapes of the mermaids. Thanks!