Experimenting Multiplicity
It is a very simple technique that can be achieved with a little bit of photoshop skills in using layer masks. Because it involves combining elements from more than one pictures, in this case, two.
Best done using a marker because it gives an idea of where the different elemets of pictures are going to interact.
First shot for the multiplicity using leaf as a marker for the actor to guide.
Second shot with the actor using the dry leaf on the groujnd as a guiding point.
After the photoshop layer masking. :)
A little bit of colour and brightness adjustments.