IIRC, on the Palladium Martial Arts Netbook there's a "guidelines for making your own" bit...
and if you look around online, i think one of the guys what got published in Rifter also has one...
Need some advice Katseru Satsujin
Moderators: Immortals, Supreme Beings, Old Ones
See the following:
Creating Martial Art Styles
Creating Quickie Styles
Martial Arts Style Generator PDF
Creating Martial Art Styles
Creating Quickie Styles
Martial Arts Style Generator PDF