Shaving Drip Rails - need pics and info

I've been thinking of doing it on a 57 chevy truck I picked up. Seems pretty straightforward as long as you don't get in a rush. Just cut little sections at a time and tack it up slownkly. Im thinking of not shaving my smooth, but leaving a little "bump out" for lack of a better term. It'd still kick the water out a little but wouldn't stand out like a factory rail. A lot of hot rods do it this way.