I really like the visual style, but there doesn't seem to be much in way of a proper gameplay loop. I think this is a good base for a game, if you decide to update it further.

The art is very nice, though it is extremely laggy. Also not sure if there is any goal whatsoever.

Simple game with very good art. Maybe consider adding a goal or win condition? 

The rendering was also very laggy on my device. I'm not familiar with Godot, so I can't help you here, but maybe take a look into your code to see if unnecessary objects are being created.