I played the test levels.
The game is overloaded with cuteness, a really nice game.
The ease of which levels can be skipped is great for those that do not want a lot of difficulty. I do wonder whether you should additionally add walkthroughs for each level, or hints, or similar - but that may be superfluous.
I have seen most/all these levels on stream months ago, so they were not that difficult for me (they would have been more difficult if I had not seen how to solve them on stream), though still challenging.
For the space levels, could some fairy-themed space objects be relevant? Like some fairy-themed spaceship zipping by far in the background? Or some constellation of a fairy godmother or such? On the other hand, the background should not be too distracting.
A number of the levels depend on the "corner-cases" of the game rules, which might be good.
I could be wrong, but the game feels ready and done.
I wonder if you could get different and possibly more useful feedback from newcomers, like people that have never played or watch a stream of the game and never heard of it.
I feel like I am not giving you useful feedback here, in part since I have played it a long time ago and also have watched streams of at least some of these levels, and it just feels good.