Hi Brian
No-one else has replied and I know it's nice when someone does so....
I am no expert in terms of mixing but if nothign else I would suggest that you need to "move the orchestra back" ie take out some of (some would say all of ) the direct mics. There are many threads floating around here about creating "depth". You have a decent sound but it all feels too close and a little bit like all instruments are at about the same distance away
Musically (which I like to think is more my area....), given this is to be a film score it is hard to say too much when there is no picture or even too much of a basic premise to match it with.
In general the textures and orchestration seem OK but I would say that you need to think about:
a) the melodic or thematic content - the oboe idea at the beginning starts well enough but you don't take it anywhere? Also the same thing with the horns at 34 secs in - perhaps develop it rather than simply repeating it a few times? Short notives can work without development, of course, but they need to be very strong ideas and rely on interesting harmonic twists.
b) perhaps related to the last point, the harmony is very static. Nothing wrong with that as such if the pedal point leads to a build up in tension but this is not coming across
I hope that is some help - if not please feel free to ignore me!
Steve