I think the piano would benefit from being much softer. The same goes for the violins because they sound very dry and rough. This takes away a lot of the atmosphere imo because the chords don't express themselves that well. It starts to get quite cluttered at 0:55. I think you need some separation in the mix. I think the violins should be a lot more distant while the piano leads. It sounds quite unbalanced as well. I do like the arrangement but it can't really express itself that well at the moment. I think this song could be really cool. I overall think it needs to be more spacious in the mix and have the volume levels balanced. I think layering the piano could have also been a possibility.