Hi, I'm not a nexpert but if I could give some tips on this, as the scene seems to be really nice. However, I would have gone closer to the water and the girl, so there would be a bit less sand in the photo.
Also maybe crouching a bit would get a better angle for the photo., showing larger contrast between the beach and the sea :)
But if you don't need any tips, please ignore what I wrote.
RE: sand sea sky