thats lookin good! salt works great, i use it all the time.......so does hairspray, and believe it or not......silly putty!
i usually just rub the salt off with a soft brush and some warm water right after the paint has "flashed" it will give it that "peeling" look, there will be actual flakes of paint barely hangin on.....but im impatient, LOL
keep up the good work, youre doing great!
cheers
bryan