Oh wow, thank you so much for this amazing feedback! I appreciate it very much that you took the time to listen and write something so helpful!
Ahh I can't tell if you're being nice or genuinely think that, but thank you very much! You are right, I just started trying to write music in scores, and I couldn't do it for a while because of my studies. This piece is something I started writing a while back, and I liked the initial piano melody, so I wanted to put this up in the forum. I resumed it recently and finished it in a rush because I was getting impatient, which is why the strings are so underdeveloped and why this is so short. Someone else here suggested developing the other instruments too on another piece I put up here, so I should definitely try that!
It's also easier for me to write sensibly when I have my piano (I don't have access to a piano right now) with me so that I can actually play it and see the placement because I'm not good with sight reading and I've only just started writing, so this is great advice to develop my writing!
It only occurred to me today that I should've given some of the bass's parts to the cello when I saw someone play the bass today - I should watch live performances and study these other instruments too when writing for them.
Thank you very much, this is highly encouraging!