When I stumbled upon your "Goodbye, my Brothers" series, I took notice of the detail where Leonardo and Donatello had the other's bandanas(?) masks(?), where Raphael and Michelangelo did not.
I was curious to the creative decision behind it. Was it based on the characters themselves? Such as Leonardo and Donatello having the thought occur to them, whereas Raphael and Michaelangel's emotional states wouldn't allow for that to be an immediate thought?
Or is there something else? o-o