Hi Minisub,
I'm not professional or anything at all like that, but as you're asking for feedback thought i'd have a bash. Please take all this as my opinion rather than "I think I'm the next Chopin" style of advice.
Quite nice, enjoyed listening to it. You seem to have the mechanics down, couple of notes in the left hand I wasn't sure on but I haven't got the music in front of me to be sure. Personally I enjoy a little more Rubato, which I think with this piece you can really get away with, particularly on them low Bb's.
I would also say break up the phrases a little more, again you can get away with some rubato to break them up, don't be afraid to lift the pedal now and again to help with breaking up the phrases a little
The tempo was a tiny bit quick for me, but that's personal and not a knock at the piece. The trills are nice and in time, I would suggest speeding up ever so slightly just to bring it out more, but that's preference.
If you can; a touch quieter in the left hand and make that right sing more, I think that could be accomplished with the rubato and slowing the tempo every so slightly.
Ending was handled very nicely, maybe a little too slowly for the very last section, which I think is supposed to be the same speed as when you started, maybe different scores suggest differently. I struggled with that little right hand section the quick notes towards the end so i'm quite impressed.
This is one of the first pieces i learned when touching the piano, I had no idea how to play or read music, and it was from one of these terrible electric keyboards that lit up the keys you were supposed to press, I think learning without the music was quite lucky for a Chopin piece, all of which I think are famous for expression and emotion rather than strict reading. I wouldn't be afraid to listen to some interpretations and steal what you like. This is assuming you want to change it at all or are not happy with it.