When you're describing where things are located around people, you can use the phrase "to your right" or "to someone's left".

When you describe something as "to someone's right/left", you're telling where it is from the point of view of the person you're talking about. This might be different from the point of view of the listener. In the example above, "to my left" means on the left side of me in the photo. If I'm facing toward the camera, this will be the opposite direction from the people looking at the photo.

If you want to describe where something is from the point of view of the listener, you can say "on the left":

The girl on the left of me is Adrian's friend Mirlaine.