Pedro Pascal Flat Face Lego Piece

This is Pedro Pascal's face with a LEGO compatible piece on the back. I took Pedro's face, changed it to black/white, added a green screen (seen in pictures), and then wrote a python script in blender to take the shades of gray and turn them into height values for squares. This is how I got this print. I know it's not the best render in the world, but it does kind of look like him.