Nuther thought is to straight stitch (with small sharp needle) about 1/16 in from the edge first... then zigzag over the straight stitch close enuf to cover it up. And as someone said on page 1/2, the applique zigzags should be mostly ON the fabric with just the right-swing missing the edge a tiny bit... 3/4 or 7/8 of the width of the zigzagging should be ON the fabric. good luck, again. Sheeps