Hello, I just had a listen to the D flat major Nocturne, you did a great job, it is a very demanding master piece. We can all give advice, but music is very flexible, there is no one way of performing it, you are your own best critic. One thing I've discovered is that you have to have self-confidence and some common sense, learning from people that know more than we do is common sense. However, eventually we're on our own, the sheet music is all we'll have.
Recording is an excellent way of capturing one moment in time, like a photo. You will like returning to them in the future, it will bring back memory. Well done.