catchy!
First of all, I loved the melody you present here, and the rhythm works well with the orchestral background. I'd like to focus on the things that I think could make this sound more effective:
First of all, I felt the balance between the orchestra and percussion was a little off. You're using hand drums which sound like they're being played right next to a microphone while the orchestra sounds pretty far away. I think if you toned down the percussion (or raised the volume of the orchestra), it would sound better. Also, the orchestra is pretty static. I think more dynamic contrast in the strings/brass could really make this mix sound more dramatic.
Great start so far! I can hear some Martin O'Donnell influences here.