When it's just one hand, it's just one sleeve, and it looks straight, as it should.
If that's just one hand and one sleeve on the right, then how do you explain the weird shape of it all on the right? It doesn't look weird on the left. I defy anyone to duplicate the Jackson image of Oswald's left hand. What do you think would happen if you tried? Do you think it would look like that? You can tell easily enough. Just duplicate the position with your own left hand and stand in front of a mirror. It will look like what you see on the left, not the freak hand you see on the right. Oswald didn't have a freak hand. This is just more photographic flim-flam brought to you by the JFK assassination.