I thought your game was really fun!
The level design is very impressive. Everything feels balanced, concepts were cleverly introduced, and the challenge continued to increase.
All the details you added were nice too, like the introduction, the idle animation, and especially the death animation (and the sound effect for that was great.)
I think you could work on the hit detection. Some collisions with clouds felt unforgiving, like I wasn't really touching them. Shrinking the hitboxes a bit could help.
I hope you keep working on new games!