Hello @JorgeDavid, I find this piece really sorrowful and melancholic and I wouldn’t have been able to tell that you are not used to write slow pieces in minor if you hadn’t mentioned it.
I find main theme specially beautiful in its simplicity, with a thin texture, driving harmony and a powerful message of desperation. I find it a perfect theme (and I emphasise the word perfect) theme to write a theme and variations piece. It has lots of opportunities to be transformed in so many different ways. I can think of: a quasi baroque flowing melody in a single line (something like this) form which could emerge other different lines, a climactic chordal bell-like passage, a complete nocrturne-like transformation to major, an even darker somber version in the deep register with minor chromatic mediants, a driving syncopated dramatic march, a triumphant transformation. And possibly, with such a versatile theme you can do practically everything.
Maybe if you agree for your music to be taken to create a variations piece and @chopin wants, a competition similar to the Brahms lullaby one could be done by youngcomposers
I also like the harmonic language that you employed here, chromatic, but still clearly tonal, typical from the romantic period.
You could try experimenting with augmented and half diminished chords to create even more expression (sorry if you have done this and I haven’t seen it)