Hi,
Firstly, both this song and the video are excellent - so well done on both counts! Nice job!
These are my thoughts, but they are, of course, only personal preference so keep that in mind:
1. The chorus is quite distinctive, and is has a definite "hook" feel about it, although I feel it is robbed of the full effect because the verse and the bridge are quite loud in the mix and arrangement. There doesn't seem to be a gradual build up, and I think the chorus would really benefit from that.
2. To help the chorus stand out I wonder if a second melody line could run in the background, as a harmony, perhaps with a deeper, more present orchestration of strings in the background than that which is there currently.
3. In the instrumental, it would be good if the singer did not move her mouth (she appears to swallow a couple of times). If the only movement here was eye movement I think it would be really powerful.
4. Lastly, is the piano a garage-band style machine or similar? It seems to have no expression. I think the song would benefit from the sort of expressive piano you might find in an Adele song, that sort of thing.
They are only personal views. I thought it was a really, really great song and deserves a lot of airplay. The right mix and production for that song would reflect its genuine individuality. A really emotive song.