List of things to change
1. change the piano. It sounds horrible and detuned. I really feel bad saying that because that's the main part of the song for you, but it really doesn't sound good at all.
2. Either lower the volume or compress the drums. I can hear clipping in there.
3. In the piano melody, where it goes Bb-F-C-Ab-D-Bb-C-D, The jump from Ab to D is not smooth at all. Furthermore, since the melody is so close to the bassline, the last two notes really sound bad when considering the chord that they're on. And it clashes with the higher piano key hits when they come into play.
4. 1:22 when the string melody comes in, it's hardly audible, in fact I would have missed it if I wasn't paying indepth attention to it.
5. The strings have a really bad loop. But that's not an emergency, that's just something I can pick up. Diff strings maybe?
And that sums up everything that needs to be changed. Things that should stay:
1. Chord progression: aids with the soft feeling of this song.
2. That melody with the strings, as long as it's turned up.
3. The high-key melody. It was really nice.
4. The drumbeat. Good choice with the drums. Just compress em.
5. Ending was good.
6. The beginning was good.