OK, dunzel; my two cents worth.
Insofar as composition, I like it. It engages the imagination of the viewer; what is the little by looking at in front of him, obscured from the viewers' eye? What is he thinking of, what will he make or do with these tools?
Definitely the off-center placement is good and specifically on the left, I think, because our eyes are used to reading from left to right and here, with the brightest part being his shirt, we immediately look there and then to the right and we see another implement lying three and then some more or less negative space, which is a good thing because, since there are no distractions there, we come back to the subject.
Then we wonder about what he may be looking at in front of him and so on; so the mind begins to invent a narrative.
All this is good. I would suggest the inclusion of a minimalist "frame" around this using something like "stroke" under "edit" in photoshop, where there would be a very thin white band around the perimeter and then a rather thicker black one, yet both quite thin relative to the overall composition. This will just help to keep the eye within the frame.
Finally, I don't know where your interest in a grainy look would originate with this image. Were it one that implied antiquity in some way, then I might be able to see it. But with this image, I think it should be as sharp as possible. The reason for that is that the graininess could simply sever to be a distraction, and that is not something you want; it would serve no useful purpose.
So that is one person's opinion.
"'There's more to a picture than meets the eye; hey, hey; my my." - Neil Young