This looks neat, I like the idea. I think with a minimal light hearted plot this could be something special. Artistically this is fantastic, so good job on that. I'm gonna follow this.
One thing though, I'm not a fan of the title. I gather you're early on, but when you get a chance, you should work on a more catching title. Heck, you could even call it 'A Flappy Story', or 'SkyBound', or something like that. Just an idea.