Many patterns call for joining the chain when working in the round and the slip stitch is used for the join. If you are starting with a flat piece then your next step will be single crochet. Save
Knights in white satin…ok, maybe not. This is a stitch for filling in the blank space inside the outline. Very time consuming which is why I prefer the quickie method of applique using solid or patterned fabric and use the outline or split stitch around it.