This is something I do sometimes with friends and family. I take a picture of them straight on, then I make a triptych, the middle shot being the normal one. The photos on the left are the left side used twice to form a new portrait. The right side is two right sides used together.
It makes for a weird set of triplets. Some people don’t change much. Some get worse, some get better. It’s like the two brothers and sisters you never had.
This was the first set.