It's a start.
There is a long way to go.
Your strings are flat, and somewhat lifeless. Look to add at least a touch of reverb, that alone will take them out of that 'flat studio' feel and put them into a hall of some kind. it will do huge things to improve the realism and feeling of the track.
That said, bring in some other instruments. It's odd to have a full section of strings and... nothing else. A mournful clarinet playing melody over this would be beautiful.
Don't be afraid to introduce more motion in your melody. It's a slow piece, but you don't have to to sit around with the same rhythm and pacing for the entirety of the piece.
Your last chord gets very 'organy', I would suggest you try not to span too many octaves within a single instrument/section, because when you get a lot of instruments with similar tonality playing the same pitches across octaves, it starts to make a statement that I'm not sure fits well with the rest of the piece.
It's a good place to be starting, and once you flesh it out it will be a great piece.