Stripimg is deffinately an art. I used to do it in high school. Are you planning on just pulling straight lines or Dutch style striping? The hardest part of pulling straight lines is thickness of the line, and that is controlled by the pressure and speed in which you pull the brush. for doing the Dutch style jobs is a whole nother ball game doing scrolls is a pain in the ass ( at least for me) you have to spin the brush as you pull around the curve, tons of prcatice... Your best bet is to get an old car fender and maybe a 00 Mac striping brush (most common), some One Shot and get to practicing, you should be able to pull a straight line pretty quickly.
SJ