Difficult to tell ...

First of all its quite nice and there is potential to expand it.
But i also have several problems with it :
It lacks of dynamics and tempo changes (that makes classical music out).
The doublebasses are pretty loud in the mix - its like they are playing fortissimo the whole time. The solo violin is not good that way - let me give you an advice. Solo strings are never good to be played by plugins - to be exact, its impossible (in my oppinion), because it sounds so totally different and unnatural. The only way i see, is to get someone to play the violin and record it.
The horn sounds also pretty unnatural because the "player" doesnt need to breath - he is playing the whole time without any pause. Make some rests and add some dynamcs aswell.
The composition itself is expandalbe.
I noticed you have some patterns you repeat and bring together at the end.
It sounds pretty heavy because of the doublebasses with drums, which i already mentioned.
Especially when the bells play - i would like to hear some more woodwinds in that part .. leaving out the doublebasses replaced by a harp for example.
I know you wanted to maintain somekind of march - but it also works with less or different instruments. But i liked the part where the horns set in combination with the cymbals ... maybe you reapeated it just a litte bit too much.
Another problem i see is, that you have a big gap in the middle register .. there is high and low but nothing in the middle - so there is plenty of room for other instruments playing countermelodys, rhythmic additions or something else.
You can also corrupt the march thing and suprise the listener with sudden elements like a stop with a rebuild to the original march theme.
Im also missing more different harmonys - its mostly the same cadence - maybe you can make some break with moving a 4th upwards and play the theme in that key - just for example.
I cant tell you something about the mix right now - only what i hear, that there is no stereophony and back and foreground.

So far thats all what crosses my mind right now.
I want to give you some advises with my critique, because good critiquie is quite rare on newgrounds (as i expericened).
You have to practise more and it will work =)

So i give you a vote of 3 and a score of 6.
Im sorry if there are any misspellings.