It’s a short little mockumentary about a fitionalised version of how Warwick Davis got the role of Wicket in ROTJ. Mostly just has him goofing around the set. A highlight in the film was Boba Fett chasing Wicket around the Death Star.
The full thing was only 25 minutes and never officially released but a version combining the best sources was made by Garrett Gilchrist (aka OCPMovie of Star Wars: Deleted Magic) and SKot Kirkwood.
https://vimeo.com/16472287