I like it so far im not much a music person so can't offer a real technical advice, but i think it would be nice to add a bit more in second half some lighter fluttery notes to acompany and contrast the pattern of more somber notes you already have. That and maybe add something to the end to bring the tune to a less sudden end.

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.

I liked it! :D It can get repetitive at times, So try to keep that in mind the next time you make something, I'm still learning, and that's just my opinion, :)

So chill!