1. choose a trim and cut a length to fit around the outer wall of each sole with a 1/2-inch overlap. cut separate pieces of trim for the left and right sides of the foot strap, as well (again, the pieces should overlap 1/2 inch where the ends meet in the center).
2. to attach the trim to the sole, evenly apply a line of hot glue to a 2-inch section of the foam, using the low-temperature glue gun tip to quickly spread it to a width that's slightly narrower than the ribbon. firmly press the end of the trim onto the glued portion so that it sticks well, then smooth 