This is stunning. The overall styling but especially the hair, height, and dress makes me think of a goddess of some sort. (a goddess of nature, with the surroundings) The emotion comes across very clearly; grief and sorrow, but mostly loneliness.
One of my favorite things is the contrast between the long, sleek black dress and the soft, fluffy pink trees, as well as the contrast between the tone of the expression and pose and the pink flowers that usually have a happy or peaceful connotation. The contrast isn't so stark that it seems violent, but it's sharp enough to call all attention to the center. The black of the dress also accentuates the black branches of the trees making for a really nice framing effect. Intentionally or not it looks a bit like the black dress is the trunk/branches and your skin and hair are flowers. Going back to what I said about looking like a nature goddess, you do really seem to be one with the environment, always important in any photo.
So to break down the rating, I gave it a 3.5 for originality, mostly because I didn't want to give a 5 for everything because the point is improving, right? But to be honest, even though lots of girls take pictures of themselves amongst flowering trees, I doubt many have done it like this.
This seems like it's kind of a low quality file... not the photo, but I mean however you uploaded it if it was jpg or something else? Your face is very blurry and I can't see the detail. Is there a higher quality version of it anywhere else?