are you going to put it into Illustrator and finish on the computer or keep it hand drawn?
if you go hand drawn get yourself a lightbox or just a glass table with lamp underneath... throw some ruled lines on it as well so you get everything straight etc or even trace a pic of an actual R35 and use that as a template
keep laying a new sheet over it and re drawing it, trying different stuff as you go
looking good though, don't forget to try different things and keep all the drafts (they like that, shows how much work you've put in)
maybe try to tuck the spoiler in at the bottom and give it heaps of offset up front so you can see some tyre... R35's can't take much offset up front so I like where your going with the Z tune guards etc... good work, always helps to do projects on stuff your genuinely interested in