I couldn't find the images (I know they are still on tumblr because they were everywhere for a day but tumblr isn't exactly effectively searchable) but some episode 7 storyboards got leaked/accidentally posted too early maybe to the artists artstation account and then deleted. This article has a summary about 2/3 of the way down, though it loses something without the visual. https://bgr.com/2021/02/12/wandavision-spoilers-storyboards-leak-vision-sword-scene/