Very cute little game, especially for a very first game you made! I wish I had a sibling I could jam with :D . I think the concept is really cute and funny, and making loops is nice and satisfying. It’s great you can see the flight trail to trace the loops and the stars come out to show you succeeded and got points. I also like the little photos in the background. The fly is cutely drawn when it’s landed on the head too. It’s good the game has a full gameplay loop and the scoping was really well-done for a first game so you could have a complete experience.
I think overall the basics are solid, but it could use some polish in areas like the scoreboard and graphics, maybe SFX for when you loop or get squashed etc.. The most frustrating gameplay part for me was trying to land on his head to get points. It felt pretty tough, and the window to press space seemed a lot smaller than I expected. Maybe remove the spacebar altogether and let people land as soon as they get close enough.