Veilside 350Z Roadster

[Kaze]

So after applying a little amount of putty, I came to a realization that its a little harder than i thought, but I can work with it. However I do have a question for you mroe experienced modders. What is a good method of approach into making the rear lower decks (under the exhaust) on the body kit?

I've had a couple of ideas about it, like using the plastic from the xmods packaging to create a center frame of the lower deck, and applying the putty to it. but what are some other ideas?