Harry Potter 5th trailer Myst??
I'm sorry, I couldn't help but notice that the music you used was from Myst III. It even looked like the text you used was from Myst. A snippet from a Harry Potter movie would have fitted better. This wasn't an outstanding piece, the graphics looked rushed somewhat. I'd rather see a well-done piece that took foerever to make.
(and don't use Myst music)