You are making this pretty hard for me :p
Basically the only major thing that needs improvement is mastering and overall sound quality, but taking your DAW into account i'll pass it.
The instrument choices were nice, i don't often see cinematic music with electric guitar being the lead instrument. Then again i don't listen to that much cinematic music.
I will look forward hearing the version with vocals. I'll say in advance that remember to leave enough head room for the vocals. Often i hear songs where the vocals are barely audible. But now i'm muttering in off topic, back to it.
As stated by many others, the harmonies and structure is your strong point. This for example has many individual sections that each tell a story of their own, while maintaining a connection from one to another. At parts it feels a bit cluttered and suffocated though, for example at around 2:40, where the sounds pile up and make it difficult to hear the notes clearly.
And then of course there are aspects dictated by personal taste, but I'm not taking those into account when I'm writing reviews.
This would work really well for a film/animation/tv-show/whatever score, as you seem to have intended?
Also, a year? that's something I call dedication.