Anons, need your help.

This image was uploaded as part of some Jaime pack by someone here.
What's this supposed to even show, that Jaime used that particular photo as basis for the painting?
How do you know? Its not like that original photo is THAT similar to the final painting. And how on earth would you even be able to find that one certain photo if its all been brushed over and warped and shit before the paintover?

This keeps bugging me, anons help.