Hi there, I'm glad you really enjoyed the game. I will take a look at the bugs you mentioned. Whilst I don't plan on updating the game again for a while, I will take your feedback into consideration regarding the eye and balloon forms.
Drawing 47 can be found in a secret area attached to a world that connects to the Hermit Pyramids world.
Melys and the event attached is not new, it has been in the game since launch, and is a secret drawing.
Hope this helps!