I'm not 'feeling' the image, and it appears that it is meant to convey a strong emotion.
The architectural elements seem to overwhelm the feeling of the image and the person it is supposed to alude to.
Architectural elements should be there just enough to alude towards what happened to the person, rather then make me think, hmm, I wonder whom did the crisp marble etching and concretework (because it's so noticeable).

To fix some of this, Letter should be a lot bigger, and the locket in the foreground, at the bottom of the letter. You might want to selectively blur some of the background features, as if they are out of focus.  The cross in the foreground detracts from the letter. You can still see it's a headstone without the cross, and it will give you more space for the letter.

Also, if you tone down the contrast between the different marbles, it will help refocus the image to the letter, and the emotion, and away from the architectural elements.

Right now, whn a perso nfirst sees the image, they see the stripes, the cross, and all the lines draw the ir eye off and away from the image (in the top left direction), which is why they need to be toned down... so a viewer can stop and focus on the letter.

Even though the letter is a big white spot in the middle, there is so much strogh white/light around the outside of the image, the paper brightness is not enough to draw the viewer into it. Locket, which seems to be ather important to the story in the image should be very up close and noticeable. Also, it is turned in the same direction as the stripes, and it has the same black/whiteish coloring, it sort of blends in, little bit like a camouflage. If you want a viewer to stop and look at an element, create a visuall barrier... Like a croswalk across the road.

Overall, you are on the right track with the concept. If you toy with some of the above, it may add a lot of extra punch and strong expressive emotion to your image.  :)

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