It depends on the size of your stitch. I like to use a 1/8" stitch (meaning it goes into the applique 1/8" & then goes over 1/8" along the edge before the next stitch). I've even done them by hand back when all I had was a vintage Singer and they have held up well to regular washings. I fused with Pellon 805. I leave a 1/2" window to be sure the edges are securely fused. I use Aurifil 50/2 for cotton applique & Aurifloss for wool or felt applique.