Here are some variations on I never know which me. The upper variation has been flipped, and a texture added to make the model appear to be coming out of the background. The lower variation has been converted to black and white.
This is an in-camera multiple exposure, consisting of ten individual exposures combined in the camera. I used a Nikon D810 mounted on a tripod with a Zeiss Otus 55mm f/1.4 lens. The background was black seamless paper, and two studio strobes triggered by wireless were used for lighting.
For the entire cycle of images see Multiple Exposures.