Simple and nice! Love the simplistic artstyle. Gameplay is pretty basic, thou collisions between falling objects do add a tiny bit of depth. Sort of reminds me of Undertale battle minigames :D
Game feel is almost great, acceleration/deceleration are really neat, but the weird jump cooldown takes away from that a bit.
UI-wise, the four-panel "tutorial" is great! But feel like there could be a better way to display HP, perhaps with the number of petals or something.
Overall, a simple, yet lovely game. Good job!