I think the problem is finding good footage of Adam Driver with a look on his face (and the right camera angle) as would fit with Luke and Leia, something with subtle contentment and little motion. It’s actually hard to find. I think jonh did a great job moving over Luke and Leia- so Kylo can be next to Leia- and giving him Jedi robes, but it was just a still.
I still say that someone should use the footage of him from here.
https://www.youtube.com/watch?v=BlnRy7g--tU
Someone here said that it was from Marriage Story.