Impressive for a first.
I am obsessed with strings, always have, always will be... Now, I took a bit of music theory back in high school and it's already been said, string players aren't big fans of constant whole/half notes; regardless, I really enjoyed this piece and you can't tell me you used FL for this?
I never really got into FL (because I couldn't ever figure it out) so I stuck with Reason and I'm slowly getting back into classical composition. How long have you been composing? In any case, I'll be listening to any of your future comps.
Take care and thank you.