This set was made over 3 months in order to get what I wanted. The dry ice had to be timed to perfection in order to make it real and the models were set in place just beforehand.
We cut the lid of the box in half with two semi circle holes each side to fit the models head inside. The box was placed with the open side away from the camera, and later another shot was taken with the models leg placed through the box.
It was later edited for this effect.