To continue with my thoughts above ... if you shoot your own photos there are several advantages. Higher resolution. Color and lighting consistency. You can shoot any angle that you need for morphing. PLUS, the original subject can give you a "thumbs up" or "thumbs down" as to whether or not it looks like him or her. To me, the ULTIMATE challenge would be to create a clone where the subject agrees that it is a definite clone. 8-)