I can't believe my eyes. I like to guess the medium when I'm looking at a deviation before reading the comment.
I thought it looked very surreal and may be a painting, but veered more towards digital because of all the glowing and depth of shadows, the many layers.
So when I read it was papercraft, I just shook my head, over and over again. I just couldn't believe it to start with, it took me a while to adjust. This is an absolute masterpiece! I admire your patience and creativity.