Filigree Edge:
1st Row:    SC around, SS into top of 1st SC.
    2nd Row:   CH 3 (Counts as 1st DC), DC in SC to the right of DC just made,
                    *Skip one SC, DC in next SC, DC in skipped SC, Repeat from *.

SS = Slip Stitch                                     CH = Chain
SC = Single Crochet                             DC = Double Crochet