It's a good idea and the design is cute, the art is beautiful.
The character could fall faster and move quicker to make the controls feel a bit more natural. Navigating from one side to the other over and over again when it's that slow gets a bit irritating.
I don't understand the difference between one thing that looks like a leaf and another one that looks like another type of leaf but isn't accepted by the things that require leaves. It would be nice to see the name of things on screen when picked up so I know what they are in this case.