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Open the two round jump rings and attach one to each v-ring. Before closing them up, attach the earring wire to each. Close both jump rings securely with pliers.
Note: when attaching the earring wires, make sure that the part that goes into your ear faces the "back" of the earring-- I consider the "front" of the floppy centers the side where the middle concaves out a bit from the edge.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.