Wow, this is cool! I don't have anything else to say except for "could've added a bit more melodies and elements to the song," but it still sounds good the way it is!
really pretty melodically, I would personally go for different chords at times, but thats just personal prefrence. Love the melodic elements, especially that little harp arp, I would personally have that pad or synth of that arp play more of those quicker arp notes to make it stand out a bit more. The last crit I would give is that a lot of the synths sound quite dry. I think it would sund a lot more spacious and natural with more elements having a bit of reverb, perhaps delay.