Good work here! You got a good vibe and drone going on there. As David mention, I think dynamics would go a long way of improving it, like making the flute come and go, or just some instruments like the strings going quiet and then picking up. (I am by no means an export at this! In fact I struggle routinely with making dynamics!) Other then that, you have a solid track here. Just polish up a little bit more and it will be awesome.