Originally Posted by QuiltE

I like your creative ideas .........
However, if your neighbour asked you to make the moon and night sky, then I really think you should be keeping to the request. Yes, if the neighbour agrees ... but please don't make it a surprise, otherwise you risk their disappointment, and even worse, perhaps affect your neighbourly friendship.

S/He may have other reasons why the simplicity is desired and that is not for you to decide otherwise.