This is getting pretty close. The flower itself needs some tweeking. Specific image of it upclose:
http://southernhomesandgardens.com/blog/wp-content/uploads/paperwhites.jpgAnd instead of the flower looking like a vine with several flowers branching off, could it look more like a bouquet? Like the bell of a trumpet--narrow at the bottom, wide at the top where the flowers are:
http://media.restorationhardware.com/is/image/rhis/prod1645110?$PD$