Here is an attention getting image. A double exposure or multiple exposure means more than one image is layered on another image. That often creates a surreal, dramatic photograph that has a fine art feeling.
Of course, the processing of the image is very important. Notice the "low key", darker tones that emphasize the eyes. And with a touch of grain, the photo has a fascinating texture and holds your attention.
Many of my younger clients, like images that have multiple exposures, movement or are "quirky" or unusual.