This medium-sized Haitian vodou flag depicts La Sirene, with her comb and mirror. Pardon my angle, this piece was laying on the table in the front of the booth.
Most of this flag was executed in spot stitch, with the cupped sequins facing down, attached with seed beads in the same colors as the sequins. It looked to me as though the seed bead outlines were sewn on after the sequins.
Recently I found this nice blog article about Haitian sequined flags, as well as a link to an exhibition of Vodou-related artwork at the American Museum of Natural History, so check them out to learn more about the flags (drapo). And you can even purchase George Valris' very reasonably priced work at the sister site of the SFIFAM.