I also study composition and I have just listened to your pieces. I do like the "calm before the storm". Especially the way you handle the instruments. I am just a little surprised about the fact that the horn is also in g major? Is that on purpose?
Your modal piece in phrgian... I had to write a fugue in that mode hahaha. I do not like this mode to be honest. I guess Palestrina would kill you for those parallel fifths

just kidding that doesn't matter at all if you want it like that. But you should elaborate your theme more. Also... F is kind of the "dominant" of this mode. I would have loved to see more harmonic elaboration. Why not a small modulation?
But keep going