Looks good.
A couple of art suggestions if not too late. Not sure the turban has a finished look, maybe a little more tweaking? Also, I'd love to hang a Amulet around the Djinn's neck. Would be a good jump off point for yet another card, DJinn's Amulet.
Just some thoughts. Neither is necessary.
Or more simply, a ring on his hand if an amulet is too difficult.