I like the combination of Dubstep and Orchestral sounding music. I also liked effects here and there like the choir at 2:00 and your rise back into the main theme. Most people don't have a bridge to their song in the middle like yours. That's a good thing. It really makes you unique. My one suggestion is to add in some small sounds that will grab the listener's attention if they drift away while listening. Sounds like these could include something like occasional finger cymbal dings in the spaces between the harp's melody.

Using this for an animation or a movie would be a great idea. It sounds amazing! One small thing I suggest is to turn down the strings a little bit at the end. To me, it felt a little bit loud, and I wanted to hear the drums a little bit more. Otherwise, great job!

I loved the filter effects you used. I also loved the melody. Very heroic sounding!