Storyboard video of the amazing animated movie Spirited Away by Hayao Miyazaki:
https://www.dailymotion.com/video/x34nwc3#tab_embed
http://www.iamag.co/features/spirited-away-original-storyboard-ans-a-selection-of-85-iconic-stills/
Portland artist Melanie Stevens video of taking a drawing from a storyboard to a finished image:
https://www.instagram.com/p/BaVp_Hcj0qQ/?taken-by=brownivyx
