To be honest, I don't understand wanting a face pic. Escorts are generally accepting of your looks. A face pic doesn't help out in the safety department because a picture can be anyone's. A face pic would possibly be a reminder that she has or has not seen you.
I've also never understood ID checking because fake IDs are not hard to get. And then... say a lady checks your ID in person. Well, that defeats the whole purpose of pre-screening
Just my perspective.
I much prefer a review history or a reference.