Could be sharper. Unlike previous comments, I like the empty space, gives you a sense of loneliness/ vastness around him that tells me a more interesting story.
What bothers me is the way he is holding his tool. Doesn't seem to make any sense to me.
im pretty sure he's knows how to use it its just that he's tapping it into place in this shot and not going full force on it anymore.The way the man is holding the tool doesn't bother me. In fact, what I decoded is that the man's not used to this tool but is doing his best to get the job done. The fact that it's an old man trying to understand how a tool works tells a story of hardship.