This game is really good! The artstyle is pretty, the music is relaxing, and the use of stickers to solve puzzles is a really creative concept! However, the platforming is a little floaty, and the level collision isn't always clear.
I must admit I cheated a little. The block still has collision even when dragged around, and because of that, you can basically jump infinitely by jumping and then dragging the block upwards to your feet. Also, if you move the block left or right while standing on it, your character LAUNCHES across the screen. I doubt it was intended, but it was still very fun regardless. Great work!