Someone taking a free photo session of another person is really inspiring. The is a really nice and and it can also make someone feel better about themselves and might make their day. You could also get to know someone better. This could also help you out experience wise. Photos are very unique in their own ways. You could also explore new places to shoot photos at. For example the person you are taking pictures of can pick their place to shoot at. While shooting pictures at a place you can take your own pictures with like the nature or what not.