It looks a little ragged along his arm.
Most likely from erasing the background with a Brush. I don't like using those background removing tools.
I would rather composite blocks over the background, and then change the color of the blocks.
Notice the black pants on the man standing behind him on the left side of the photo.
Those pants are not #000000 Black.
They are #1d1d1b Black.
I would rather give the whole image background that shade of black.
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