I would like to start off by saying I think the piano in the beginning should be a bit quieter and have more reverb to maybe add more feeling to the song. At 1:47 it feels like what sounds like a supersaw (I don't really know) is drowning out everything. Although it's a lead I think the other instruments in that part could come through a bit more. I feel like you could have mixed some parts better like 1:47 or made them louder such as 4:46. I think this part could be louder.
A thing that I really like though is the feeling the song passes off. I also like how you switched up 4:03 so 4:03 and 1:47 aren't just the same. That being said it still does suffer the same problem as 1:47 being the mix. Since the lead is drowning out a lot of things, it makes the part sound less full.
Overall it's not bad at all and I actually really enjoyed! Good job!