Very unique idea! Quite hard at the beginning but i got a hang of it and it was satisfying experience (sfx really added to that atmosphere)
I would definitely suggest having some kind of grid on that cutout shape itself. Event thought i think I have pretty good eye for recreating shapes like this, it was a bit hard. That grid would server as reference points which would make a bit better experience when recreating it. Also, some step by step rotation/skewing would help a bit too, since it would limit possible solutions without overwhelming new players.
These are just suggestion if you decide to continue. So don't take it as critique :D
Overall, I really enjoyed it. I feel like it could become a really nice game in the future!