This is my first time responding, as there are usually so many good ideas...but I didn't see this one! If you are going to machine applique, why not just draw a little curly tail where you want it, and machine stitch it with the same tight stitch you're using to go around the pig...I do a lot of applique work on quilts, and this is the way I would show a tail. Good luck...your pigs are really cute!