Not bad. As some others have said, though, some of the instruments can get lost in the mix a bit. A bit more dynamic range in the song both through mixing and composition (crescendos and what have you) would go a long way. In particular, I noticed myself often losing the piano during the 2:20-3:00 time stamp.

This is otherwise quite a nice dark/moody piece, though. A pretty generally good job.

Reverb/echo on the piano and strings together might be a bit much, maybe more on one than the other idk (maybe reducing it towards the very end [4:20-4:25], where there are more notes to be had). The effect does fill the spaces in between the notes well, sets the mood, reminiscent of early Final Fantasy music.

Composition's fine, just needs some creative post-production with regard to instrument effects.