You will need...
Purple brocade fabric
Red sequins (ideally sequin string)
Needle and thread
Stick 'N' Stay craft mount
Iron and ironing board
Parts of this project are a bit on the fiddly side but it's straightforward in principle.
About 2 hours.
To cover the toe straps of your sandals, cut two pieces of fabric with the following dimensions.
Fold each piece along the middle and fold back the seam allowance by 1cm along the sides. Press them with an iron.
Stick them along the toe straps with craft mount and slip stitch the seams together at the back.
Attach the toe straps to the platforms with a few staples at the sides.
Sew or glue on your flower design.
Spray some craft mount onto the sides of the platforms and the straps and cover them completely with fabric.