We're off - orchestral soundtrack

Here is my latest orchestral tune. I was aiming for a sound in between realistic "live" orchestra and cinematic "epic" sound with big drums. I'd love to get some critical reviews of this. 

I like it! Great use of the percussion as well.

Thanks! I'm pretty new to composing and would've liked to know where there's room for improvement, both in the arrangement/orchestration and in the mix.