My high key image is the light reflecting on the tile.  Since the tile is glossy, the light on top reflect on the tile, and creating a gradient like highlight on the floor.




My low key image was the room next door, it was a glass,see-through room. The room was dark because the curtains are down. But light from the outside escape through the gaps of the curtains of one window to the other. Since it is a see through room, the outer layer is glass, so it reflect what is on the outside of the hallway.