Sheela Na Gig Embroidery

Some churches in the British Isles are decorated with Sheela-na-gigs, stone carvings of old women with exaggerated genitalia. It is theorized that these were symbols for warding off evil. I am making a Sheela-na-gig embroidery. It will probably be a pillow. I'm embellishing around it with a floral motif, sort of kalocsa or Hungarian folk embroidery inspired.