Wow! I'm glad everyone is so excited about the topic I came up with. Usually, I do not take part in competitions I set the topic for, but I might make an exception this time.
Just to confirm: yes, it is central axial symmetry I had in mind. Left and right halves of the image should mirror each other.
Just to confirm: yes, it is central axial symmetry I had in mind. Left and right halves of the image should mirror each other.