1
First, cut out a rectangle shape to the size you want. You will need to cut two pieces.
Sew the pieces together, right sides together (if it has a design on it); leave an opening to turn the fabric right side out.
Stitch closed after turning; you won't be able to see this stitching later.
2
Stitch a pieces of flat lace down the middle. Stitch both sides of the lace.
3
Stitch a lenght of ribbon on top of the lace. It should be able to fit around your head and tie at the back.
Stitch both sides of the ribbon.
4
Stitch gathered ribbon around the edges. Sew it over the ribbon on the sides.
5
Lastly, make two bows from ribbon, and sew these to the sides for a cuter look ^^
If you want to add a string of beads or other lenghts of pretty decoration, just sew (or hot glue for a faster way out!) it around the edges of the headdress, on top of the base of the lace.