Nice work. :)
A nice song with good flow, but there are some parts I think can be improved.
The timpani could be used with some nice rolls slowly building up at a low velocity/volume. The opening arpeggio is nice, but there's some odd hit at ~14 that really messes things up. Consider a crescendo-ing cymbal 'roll' leading up to ~14 and the start. After, the melody is nice, but I think you should consider looking outside of woodwinds at perhaps having French Horn take the melody for a bit for some diversity in the song.
All in all, a nice piece. I have few comments.
-Samulis