Yep, I whipped up that drawing last night. I figured something scratched in metal would look scratchy like her other marks on the wall.

I was thinking of more ways to make the island vision fit, like placing some Star Destroyer wreckage in the background that sort of looked like the shape of the island and morphed into it, the sunlight being a reflection off of the wreck, that sort of thing.

But here’s the question, as RL suggested: if I just removed the vision in this scene and left the drawing, is any more foreshadowing of the island necessary?

If the vision were to be removed, that would leave only the drawing and Kylo’s mention of the island before her dramatic vision of it at the end of the film. In that case the drawing would be pulling a lot of weight so I would probably extend that shot a bit to make sure that nobody blinked and missed it.