how do I attach my photo to my number?

WWhat are you trying to do? You can add a photo in contacts. If you are referring to others seeing your photo when you call, they have to add the photo to your contact on their device.

TTo have your photo appear on someone's device when you call, they need to add your photo on their device for your contact. There is no way for you to send your photo when you call someone.

YYou're welcome.