Hardly any true "transformations" but good effort.
Well, as stated by others before, the art isn't that good.
Song works well, but you shouldn't be getting too much credit for that.
Lines moving around the screen - any beginner can animate that with a relative degree of skill.
It's one of the easiest things to animate.
I saw no transformations. when the truck appeared, I thought "Maybe there will be a sweet transformation into something else, Transformers style".
Alas, no, you put a while square over it. Honestly, I was expecting a real TRANSFORMATION. The name is not "White squares over vehicles movie" is it?
And the menu... yikes. This was the worst part of your Flash.
The button and text isn't centered. The font isn't good.
In the future, I suggest sticking with the NG preloader instead of a custom play button.
BUT there's one good thing about the menu - you didn't use a crappy Gradient Fill. Thank god for that.
And at least you put a fair amount of effort into the movie.
Still, spending some more time on the vehicle art to make it better would have been good.
You've just got to look at your Flash and think "How would this look to other people? Is the animation for that water coming behind the boat realistic? Does it look like water?"
Keep practicing. Draw more complex things. If it doesn't look good, draw it again. Look at pictures and draw from them. Work on smoothing out your animations. Can you see a pattern here?
PRACTICE. Repetition. It's the key to success.
Good luck.