Yuran - I expect the animation took him about a day to rough in the drawings , maybe two days at the most . This isn't a difficult scene for an animator with Kimball's experience . Then it probably took his assistant another 3 days to clean-up the roughs and a day or two to add the inbetweens ON 1's (not all the inbetweens are seen in the pencil test above ... the final version is all ON 1's) .