Years ago I art directed the opening of the "Chuck Jones Show" for Cartoon Network. The design style idea was to show the development of a cartoon from initial sketch to finished full color cartoon.
We had accidentally put the pencil in Chuck Jones left hand... and he was of course... right handed. Director, George Evelyn told us... "Chuck will never notice." Well... Chuck DID notice when he saw the animation. We ended up flipping the animation in parts, which sort of changed the composition.
My apologies for the quality of the video, it's something I found online recently... my copy lost to the ages. I will update this if I am able to find a better copy.
Aaron Sorensen directed the animation, with George Evelyn in the directors chair.