hi mate only just read your post!
spent a few hours working on it (although theres not much to show)
basically i spent those hours making sure that i get the measurements and shapes right for the side view of the rear panel and front wings, also made a plug in the shape of a one piece headlight and grille combo so that i can set it into the filler and pull it out once set, easy peasy! (so he says)
no idea how im going to go about the bonnet, it has two angled pieces in it and at 1:18th scale they are something like 1mm high

hopefully when this model is completed i will be investing in materials to be able to cast them and sell complete with windows and everything to anybody who wants them, but at the moment the model is a long way off that stage!

i think it must be allot harder doing this with a resin model though, its so easy for me to accidentally give the model a deep scratch and if i dropped it once it would break