needs improvement

Your animation kinda feels like it's missing something.
You could've added more detail to the clouds or put in some land to prevent it from looking like one big blurry mess. Clouds alone aren't worth much.

Kind of meaningless

Watching clouds flow is a little bit boring. Next time, make a movie with a decent storyline.

Dull

This is pretty dull and pointless to watch... Also, there's more to clouds than just blurring up some white blob. If you've actually been on a plane, or if you perhaps look up some pictures, you'll see that the clouds look like a land covered in snow. The simple blur cloud is passable from a distance, but, since it's the focus of this animation, you should've tried to give them more detail.