Not bad at all. Firstly, I admire you for tackling a difficult subject; the '57 Chevy is not an easy car to customize (successfully). You won't find much in the way of reference, well... none you'd want to use. The body is a stylish piece that is simply hard to improve upon. Not impossible, but not easy. I'm liking where the back end is heading, so to speak. I had considered customizing one, but haven't finalized a plan yet, I like to do sketches before cutting plastic. I saw in the rear similar shapes as you, and have intended to French in '59 Impala taillights teardrop fashion. IMHO, the (stock) frontal view is the weak link, and has the most room for improvement; sort of a chrome catfish lip going on there. Your front end is looking nice. Paint will be key in this build. Have you chosen a shade of red yet??