Congrats on your first game jam! The art and color palette was great, capturing the aesthetic of clouds perfectly.
Here is the feedback I have for the game:
I liked the levels but I think a way you could make exploration more interesting is to implement "show" instead of "tell". Some examples would be to allow your player to discover parts about your game (by making the level design obvious) than explicitly telling them what mechanics do (like collecting shards).
Some examples I'll point out.
Instead of "easy and hard path", you could use color, shape or even images (like a sign with a skull) so that the player can feel like they're in control of the exploration and discover things.
This is just me nitpicking at details but the game is fine as it is. Great submission!