I've updated the project to include a thumbnail (I think). I just figured it was cheating since I forgot to upload one before the jam ended - ya know?
I'm glad you liked it! I was worried it was a little too short, so it's a relief to hear otherwise. Other than not being able to put in everything made due to my unfamiliarity with Godot, I am extremely happy with how it turned out (and that it even turned out at all).