This is my short film that I did from college few years ago.
It was hand-drawn animated, clean up with Adobe AfterEffects.
I can see tons of mistakes when I looked at it now, but it is a good way to remind myself not to do the same mistakes ever again. It is part of my history, it forms who I am today. We all make mistakes, this is part of our learning process. The most important thing is we know what to do and what not to do next time.
(I am sure few months later when I looked at the animation I did today, I can find numerous ways to make it better. =P)