Looks cool and very well done, I would like to do a 70's style GR-2 racer version with flared wheel arches and lowered suspension! I have found that using a sharpened propelling pencil (HB lead) for panel lines works quite well with white and other light colours because you can make the lines very thin and not super dark. And if you do not apply much pressure to the pencil when doing it if it goes wrong you can literally rub it out with an eraser or polish and try again!