I just finished uploading the parts and instructions for my papercraft LEGO Star Wars C-3PO minifigs to my papercraft webpage! ;o)
As I already explained in previous posts, the "14k Gold" version is to be printed on mirror/metallic gold cardstock paper, the "regular" 2012 version can be printed like normal on normal cardstock paper.
Download the parts and instructions to build your own papercraft LEGO Star Wars C-3PO minifigs (and lots more! ;o) from my papercraft webpage: