The length of this animation is pretty impressive, but it's flawed several times over. The dialogue is pretty broken in terms of grammar and it's not especially clear what the plot is. The subtitles and pauses also slow the animation way down and make it a bit tedious (some voice acting, even Speakonia, would have made this feel a bit faster.) At the same time, a lot of the animation loops (like the wings flapping) happen way too fast and the quality of animation just isn't there. Especially for a looping animation the audience will see over and over, it would be a good idea to put some more time (and frames) into loops like these even if you have to cut corners on other parts.