Awesome little game, loved it :D
The music and the visuals fit perfectly with each other: slightly gloomy yet peaceful. Bonus points for glowing frogs !
As for the puzzles, they were simple but very enjoyable, and also fit well in the overall experience. The heavy contrast between the puzzle elements and the rest of the visuals also helps a lot in bringing them forward, while being nicely tied to the lantern mechanic.
I think there's a pretty nice opportunity to push the concept further along the line, this is a great stepping stone !
Cheers and well done !