Honestly, this would have been a great track if it wasn't killed by production issues and your lack of experience regarding MIDI programming for orchestra.
I have read the other reviews, and saw you use notation software. One of the issues with this kind of software is that you don't have as much control as you could on the dynamics of the instruments you are using.
If you use notation software, it's a good idea to import the MIDI in another DAW, and to add more changes to the dynamics of your instruments, for example by using the CC#01 on the DXF patches from EWQLSO (other libraries from EWQL will have similar patches, but I think it's EWQLSO, given how it sounds), and adding some velocity changes. Just to give you an example, this bass drum becomes incredibly tiring because it doesn't feel "human", it is ALWAYS played with the EXACT same intensity, every single note. The same goes with most of your other instruments, even if it's more subtle.
If you really don't know where to start, you could read EWQLSO's user manual (chapter 5 mainly). I don't know if this is the best thing to begin with, but I remember it contained some useful information about how the library worked. If you don't use EWQLSO, you can disregard this, but the "Creating an soundscape" and "Volume, velocity and expression" give some very general advice and vocabulary that can be used with any other library.
On a more general basis, you could also keep in mind that an orchestra will never play a piece perfectly. Part of making an orchestra sound realistic is to reflect these imperfections in the way you "program" your MIDI tracks - something that can't be done easily in a notation software.
Don't be afraid to spent a lot of time reading on the subject of MIDI programming or sound engineering, you'll end up learning a lot. I also recommend looking at how other composers work. You could look at Blakus' Template Walkthroughs or Behind The Scenes videos for example : Watch the beginning of his video on the Hobbit 3 trailer music, and look at his tracks, how he uses the MIDI Control Changes, how the notes don't start exactly in time, how the staccato/spiccato notes aren't all at the same velocity, how each note of a chord don't start exactly at the same time. It's the sum of all these imperfections that makes an orchestral mockup sound realistic.
...well, there's other things, but this is what you need to work on for now, I think.
I truly hope you'll take the time to improve on these points, to give your music the sound it deserves.