Track 1: these are beautiful, delicate harmonies. excellent job picking out the instruments for this track. you've done a great job of painting the image of little rock people in my mind :)
Track 2: this track sounds similar to the first, and i really love this harmonic world you're creating-- consistency is pretty key with a soundtrack. this track has a greater feeling of emptiness and weakness, which again fits your story so well. i wanna use these sound libraries so badddd they are so cool :0 gotta check out spitfire labs
Track 3: i love a tone shift... and when i tell you it started thundering outside right as this track came on (spookey) these eerie swells still have that janky-in-a-cool-indie-way feel like the rest of the soundtrack, but are also a massive shift from what we've heard so far.
Track 4: this is a beautifully cinematic way to end the soundtrack, and ending it on a dominant chord was great!
you are in your niche and doing great-- I have very little advice to offer you, other than to avoid getting locked into repeating the same four chords over and over, which only really happened in track 1. otherwise... bravo!!!