Hello Luderart!
Thank you for sharing your music here! I really enjoy your use of harmonic progressions and how you hide the harmonies in the melody of the piece. Very creative. I always find that writing for solo instruments (especially strings and woodwinds) is very difficult. Both because you must create harmonic and melodic interest using (usually) just one line and because it can be challenging to create enough contrast to hold and audiences attention using just one instruments palette of colors and textures.
One suggestion: In my opinion, I think you could more clearly define the phrases and phrase structure of this piece. This would help to give this piece a more sing-able melody that could push it in a good direction.
Thank you also for posting a live recording of you playing this piece for us. I always love hearing people (especially when it is the composer themselves) play new music.