Picot edge

Just knitting a baby bonnet with a picot edge stylecraft pattern 4206 need to know how to sew the picot edge.

Maybe one of these patterns:

How have you worked the picot edge, as a picot bind off or as part of a hem? I usually leave a long tail of yarn after the hemmed bind off and use that to stitch the hem. You could use a fresh length of yarn too.