Put the headpin through the turquoise bead and make an eye on one side
Open up a jumpring and attach the eye of the headpin and one side of the flower connector and close it.
Open the eye of the earring hook and attach it directly to the other side of the flower connector. (if you want to make your earring a bit longer just attach two more jumprings between the hook and connector. With just one the earring will not hang straight.)