Very nice demo, I managed to find all 5 flowers! The music, artwork and animations were gorgeous, especially for the main character, but the terrain could have used a bit more variety. The controls are generally nice, but the jump feels very floaty, and I think it might benefit from a "glide" effect where you fall slowly while holding the jump key, but faster when letting go. Being able to attack enemies would have been a great addition too, of course, but overall, I think there's a very solid foundation for a full game. Good job!