Hi all!
I’m afraid UV mapping etc is not my forte, so please bear with me - is it possible for me to take two photos of somebody’s face (front and side views) and then UV map them onto a model quickly (i.e. using the ‘From Window’ unwrapping operation), so that both the side and front have a fairly good quality?
Hopefully that’s in some way comprehensible. Any help is much appreciated! 
yes. rewad wiki Painting, esp. unwrap using project