In December, we did "Star Warigami" and one of my coworkers did some nice instruction sheets using the original instructions from the Origami Yoda juvenile book series and a fun background to go with the theme.
The paper dimensions for Darth Vader are 8 1/2" x 11"
The paper dimensions for R2D2 are 5 1/2" x 3 1/2"
The paper dimensions for Yoda are 4 1/4" x 5 1/2"
Adult & Teen Services Librarian
Provo City Library