I think that you could improve this quite a bit by varying the orchestration, especially using woodwinds for color changes. The flute over high string cluster gets tiring after a while.
Try one some of these for size:
Oboe or clarinet on the melody.
Double the flute melody with a celeste.
Strings playing the melody in octaves over woodwinds in harmony (bass clarinet, 2 clarinets, 2 oboes).
Same as above but double string melody with flute.
Same as above but add mid-range french horn harmony for thick "glue".
Flute and oboe playing melody in octaves over french horn chords, use whatever you want for bass note.
Substitute celeste, glockenspiel or piano for the harp.
Have more fun with it!