Great piece
A lot of folks like classical, it's just there aren't that many who bother to step up their game to write orchestral classical.
This piece really was great. You used phrasing excellently and the rhythms/repetition was used well.
My main concern is with the way you build it up. At the beginning, you have the start of an excellent climax, but you drop it. To get that climax feel, you should consider using a cymbal crash and such.
You might want to make the melody louder, as the strings sometimes cover it up. Also, it can't hurt to have trumpet or french horn doubling it up higher (i.e. and octave up). There are clear phases, which isn't necessarily a bad thing, but in a song where you're trying to move things from part to part, it can feel weak. You should consider looking into some transition methods such as cymbal crashes, short drum/percussion passages, and the like.
It might be nice to see the strings doubled at some points by a Celesta, Chime, or Glockenspiel to give it a new touch. When the strings come in at 0:34, it might be nice to see them doubled by French Horn and stronger as a sort of 'claxon call' feel. The horn would then drop out before the interlude at ~0:57. When you repeat that initial theme in the 1:15 region, consider mixing it up with new instruments playing or parts being moved around. Also, a low trombone part with a legato quarter note than stuccato eight playing a low version of the root/tonic of the chord at the start of each measure (dun dun... dun dun... sort of feel).
The measure interlude at 3:16ish is odd... perfect spot for a cymbal crash or the like.
You did a good job with catching a good feel throughout the song. It goes between various feels in a good order, although I would consider bringing back a version of the initial theme at 4:29 before the clarinet ends it.
All in all, a great piece. Keep up the good work!
-Samulis