You don't even need Photoshop, it's amazing what make-up alone can do to a girl if she knows what she is doing.
Japanese girls have the tendency to do their full make-up on the train, i can't count how many times some normal or even slightly ugly looking girl got on the train with me only to step out of the train as a full 10 that you would fuck behind the next corner instantly after 10 stations....
Tight pants, short skirt, cleavage and high heels do the rest, also a good hair cut.
If you want to assess if a girl is girlfriend material, go to a pool with her and dump her under water for 20 seconds. If she comes up, looks great, laughs and dumps you under, go for it.
If she screams and fights because her make-up and hair is ruined and runs to the next toilet to refresh make-up or screams because you got her under water, use the distraction to leave fast.