This is a very nice game!
I think my favorite detail about it was the autumn leaves particles, it's a small thing but does a lot to bring out the atmosphere.
Great choice of music & art, it looked and felt very consistent and in tune with the game story and message.
The difficulty was ok, it didn't take more than 10 tries to complete any of the rooms, so I never felt stuck.
In some cases it was very hard to see the spikes, as they blend into the background or the decorations, and you notice them only after you die on them once or twice. Same issue with hearts in some rooms (example pic attached, heart blends with cloud and spikes blend with fence). Perhaps it would've helped if the spikes had more visually distinct features, or the decorations were not as saturated as the foreground elements. Also a minor thing, in school levels the paintings have very high contrast against background, which is similar to floor platforms, and at the same time the lockers obscure the white/brown floor lines, so it becomes somewhat hard to see at a glance where you're supposed to land, you kinda have to stop and think for a moment. There was also the issue of not being able to see where to land due to camera positioning, but that's been mentioned by other reviewers.
Overall a pretty good entry!