Didn't look exactly like this , but the square on the face was ALMOST a perfect square

HELLO !! So uhm today while I was trying to uhh hit a gift goal , I saw someone with a skin that looked smth like this , and I've been trying to figure out how to recreate it as I'd love to make some OCs with this , but for the sake of my life I can't figure it out 😭 ... I'm just hoping there's someone out there who could perhaps help me ?