I’ve been doing a series of these Janus images based on the Janus myth.
In ancient Roman religion and mythology, Janus is the god of beginnings and transitions, thence also of gates, doors, doorways, endings and time. He is usually a two-faced god since he looks to the future and the past. The Romans dedicated the month of January to Janus.
Here’s an example from the Vatican Museum.
In my case, I’m using a reflection in water as the second image. Reflections only work if they seem to interact with the original image. That means, both images are somehow greater because of the reflection. In this case the interaction is enhanced by the arm–underwater–seemingly touching the reflection. Because the arm is underwater, it’s a bit ethereal. That makes it appear to be halfway between reality and reflection. I think it really adds to the overall composition. This is an image I’m particularly proud of.