Quite good! Loop is nice and seamless. :)
I think this would benefit from some added orchestral percussion to supplement the kit- gong, clash cymbals, etc. just to give it that punch during the orchestral parts. The drums in general seemed a bit quiet for a rock mix, but hey, I don't know much about those other than the few pieces I've heard around.
In addition, it'd be interesting to see the orchestra do a bit more- maybe even have a contrasting alternative section in the piece. The brass in the second orchestral interlude also seems a bit weak on firepower and muddy. Maybe use some staccato patches or something and a bit of good ol' poly-rhythm to bring it all home, or maybe some counterpoint of some form to create a sort of call-and-answer effect between the brass and violins/violas (which are conveniently on opposite sides of the stage). :)
Keep compos(ed/ing) and good luck!