Hey man, cool production. I think the mix and arrangement/ sound design is on point. As far as a production goes this is nice. Something that really bugs me about the track though is the actual music behind the production. Don't get me wrong, the melody and chords are pretty and work decent with the vibe of the song, until they start to get redundant for how long the song is. The same progression is going throughout the whole song and it would be nice to hear some type of varied structure over what you have here. At around 41 seconds in I would like to hear a chord progression that counters what has been going on, and maybe even filter those chords to build some tension. This song would be amazing if it had a roller coaster like development, it just stagnates too much. Hope this helped