Epic Fantasy Soundtrack

For a first composition this is very good. All of the instruments are well balanced and the work flows with confidence and thoughtfulness. I would actually extend the very end of the piece by another 15 seconds or so, because the off-key note (I think it's concert E?) in your 2nd last measure demands attention. But this is your call.

Other than that, I do think the visual presentation of the score needs to be improved. For example, if all your 6 French horns play in unison throughout the piece, is it really necessary to have 6 different staves for each horn? I think having just 1 French horn part is sufficient, and then on your title page you can indicate how many French horn players are required. Repeat this for all the other instruments, and then your score should be much easier to follow.

Also, you indicate 'voice' as an instrument, but you give no indication as to how many vocalists you want, or how many parts there are (sometimes you have 2 voices, sometimes 5). Normally the standard is no more than 4 voice parts: soprano, alto, tenor, and bass. You can either give each voice part its own staff, or put the ladies in 1 staff and the men in another. Indicate clearly who sings what.