Interesting; I like the concept. I think this could have been even stronger had you moved him a little more image left.
@enezdez Love the concept and staging. Generally John is right on but I'm not sure I'm following him on moving the subject further left, as the nose is already left of center. Think I might be inclined to either leave as is or go image right instead, but that may just be a personal like>SNIP.
Speaking of which...this morning in bed, I looked at this post and saw the photo very small, on the iPhone SE's small screen, and I felt the same, that the gravestone needed to be a bit more to the left, and that the lower right hand corner was too closely-spaced, meaning that yes, the photo would look better with him and the gravestone a bit farther to the left, or, if the camera had been farther to the right.
Now, three hours later, coming back to this post on my iMac and a much bigger screen, the photo looks less in need of re-balancing, yet still...I tend to go with my first instinct. I'm quite picky about centering/composition/top space/margins, and so on. if there's a lesson in this, it's probably that on questions of framing/spacing/aspect ratio, seeing the image small, or small-ish, might be easier for the judging of how a picture ought to be framed up. Similarly...I've found that if I like a picture at a thumbnail size, or small, I will also like the photo when seen larger. And that holds true in this case. Riffing on what Smoke mentioned, there is a slight greenish color toning that, to me, is not optimal for this image, in my opinion.
Then too there's the comment that smoke makes, about where the subject's eyes are placed within the frame. In this image, to me the eye placement is less important than the mass and visual weight that the tombstone holds, and I'm less concerned with the eyes and their location than I am with the headstone, and the edges of the frame.
Anyway...just a couple of thoughts about John and Smoke's comments on your image. I generally do like this picture. It's simple, and has some gravitas. This guy is a great photo subject, and this is one of the handful of absolutely best shots I've seen of him in your catalog. Good shooting on this photo. I think it could be reprocessed any number of ways, to make it even stronger than it is now.