Not bad at all! I'm not too sure if you're looking for suggestions, but I might throw two suggestions your way! The first suggestion would be to either change the piano with a softer, felt type piano, so it sits better in the mix with the flute that you have (I don't think it's bad the way it is, perhaps try to EQ the low end slightly, and add some reverb to the piano too (but not too much reverb).
My next suggestion would be more of a musical thing, so it's more to do with preference here, so don't worry about this too much! The track seems to just start off with a really in-your-face piano. I personally find this weird, only because the track is pretty relaxing, but then you have the track start at like -8 LUFs, which is like, EDM realm of loudness here (maybe it's louder). So work with the vibe of the track, think about a setting for your music, and think about how it moves from 1 section to another... For example, it starts of calm, but then perhaps the velocity of the piano increases, which makes it sharper, and makes everything more intense, so now everything is more intense, perhaps add drums for added intensity, and then the flute (or have it already added, and maybe make it faster, or change melodically to match the section of the song).
Hope this isn't too much. All in all though, I think what you have here is pretty neat

, so keep it up!