I think it'd be interesting to either have a 'forward' or 'authors note' kindof deal...with perhaps a short blurb of how your artwork and martial art converged to make the book.

I agree with that. A short blurb in the beginning, but let the action speak for the rest.

Blurb-Come on, how often do you get to use that word?
We should all take ourselves seriously...and then crumple that image up and toss it out the window.