Really cute, short game. Took me a while before understanding that I need to click all sides of the box, and that I can change direction mid-flight. Maybe you could add controls and instructions to the game, or the itch page.
The background image of the grass looks a little out of place, replacing it with something more fitting with the overall artstyle of the game (or just a single-colored background) could improve visuals a lot!
Got the price in the end!