First Major Work for a Large Ensemble

I'd like some suggestions, criticisms, and general comments on this piece, which is my first major work for a large ensemble, entitled "Milk and Honey: An American Frontier". It's for Symphonic Band, and it intends to capture something of the spirit of Americanism.

Anyhow, here it is. Don't judge me on the notation, because I haven't really messed with that yet, and it's basically all Finale. Also, there's no mp3 of it or anything, because Finale is not capable of rendering an accurate mp3, it would seem, and midis don't have all the human playback elements that I need.

Milk and Honey - The American Frontier.pdf

Curses to me and my inability to read and hear music!!! Is there any possible way that you could post a rendering? I think we all know that it will never sound as good as real instruments but it would help the less-able (such as myself) get a clearer idea of what you are going for.