You start your piece quite slow and soft, which reminds me of my favourite prelude from Chopin (number 25, iirc).
One thing I've noticed here is the four chords structure with melodies darting all over the place — I'd probably suggest these be toned down to the background, it risks getting atonal otherwise. Ending is also a bit abrupt, ya? Bit of decay there might help.
But otherwise, I like the feel it gives. It's chill, it's melancholic, it's pensive. I can see it being expanded into all sorts of things, or being left as is; I think what you have, with a bit of work, is versatile enough to adapt or leave in any which way you desire, which I quite like.