Great game here's my review :
ART
the art is gorgeous ! did you make everything yourself or is that a premade art set ? either way fits the theme perfectly
SOUND
neat sound design, would have loved if there a music that fit the atmosphere
LEVEL DESIGN
Super solid, very well tought out i took notes because that was some great layouting
GAMEPLAY
great mecaniques however not well explained which left me in confusing until i read your comment, would be better if you added text above the buttons you added to explain what to actually do (and that E looked like a C imo lol)
FUN AND THEME
i had a ton of fun would play a full release, and it definitly fit the theme
BUGS
i found one minor bug when you pick up that ball thing and throw it, it's still stuck on the sprite which is very annoying tbh, but nothing game breaking.
All in all good job !