Originally Posted by Peckish

That's not silly, that's EXACTLY what "needle-turn" appliqué is. You must have seen someone somewhere using this technique! Thankfully, there is more than one way of doing appliqué. You can fuse it; you can stitch the raw edges with a buttonhole stitch or a satin stitch; you can turn under the appliqué seam allowances and starch them, then hand or machine stitch. No rules except have fun and enjoy the process!