It's very simple. Create a diptych that has two different images of the same being. This being could be you, your dog, an insect, your neighbor, or any living being you may encounter on your daily rounds. Please, no inanimate objects.
Participating in this Utata project is simple! You need to do/have the following three things and then all you have to do is tag your photos utata:project=taketwo21 (read about other tagging options) and you're all set! Have fun!