- Open your Contacts app to the entry for yourself, and see what image you have set.
- If you do not have a contact set up for your self, do so (including adding the image you want to use),
- Open the Settings App > Mail,Contacts,Calendars and set My Info to your contact entry
- Still in the Settings app, go to FaceBook and turn off Contacts unless you really want to use FaceBook for your contacts.
Using FaceTime http://support.apple.com/kb/ht4319
Troubleshooting FaceTime http://support.apple.com/kb/TS3367
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