So, the following is in order. Sound, the author needs to get a better microphone, there is a lot of clipping and noise in the voice. Art direction, either keep the whole thing with a single style or provide reasons for the change in appearance, for the parts when the color dissapears or when you decide to remove detail. Grammar, what you write in your animation isn't a message that someone is going to ignore; it is going to be watched by most likely thousands of people, if you don't use proper grammar, or again, provide a reason not to, your animation won't be taken seriously. If you can't take your animation seriously enough like to write properly or verify your grammar, I don't see a reason anyone else should.
I don't recommend.