Find a black clutch bag with decorations that you dislike or find dated.
Pull off the badge...
...And unstitch the ribbon.
start by pinning and sewing a lace border to the bottom of the top flap and carrying on until the lace reaches half way up the flap.
Take a watch dial and thread black lace through the top and the bottom to mimic straps and stitch this on at an angle near one of the side.