Basically, it consists of renaming a certain bone (usually the YRotN), and scaling the character using that bone in every animation.
Apparently, the recent version of BrawlBox has a feature that makes the process much easier, but someone else will have to explain it to you because I have no idea how it works. /:
Ooooh...hrmm, well, barring someone explains to me that Brawlbox feature, that sounds like something that is DEFINITELY out of my expertise... :/
Sooo......would anyone here be willing to make the one-slot Young Link for me? I'd give you 1,000 Internets as a reward!!!