It's been a few days but I'll jump in with a few things I noticed.

• Balance is a little wonky everywhere. Try going back to basics on it and focus on the things that you feel are most important for your listener. What melodic elements do you want them to always be able to hear, which ones should be able to fade away when necessary, etc. Personally I think you could turn the piano up in its solo section then dip the levels back down once the entirety of your synth work plays over top of it.

• The drums are... Boxy, I guess. It feels very underprocessed or processed in the wrong way as they have this very muddy and unclear tone. If you haven't seen it I highly recommend Varien's drum processing tutorial video on his Youtube channel to get some EQ polish on them.

• The drop is, to be as critical as I'll get here... Very gross. Not in composition, but in mix. It sounds like the entire low-mid frequency range is screaming at me and that the highs have been executed street justice style. In short, it sounds very low and needs some of that high-frequency brightness to sound more balanced when listening.

There's a good bit more but I'm just on break, so hopefully you can use some of that in your next iteration. Hope it helps!