Too ambitious?, Want to make my own body kit. Options

[CAMAricer]

I guess the first thing to do is make molds of my existing parts to use as a template...

Does anyone know what kind of material I need (or will need) to do this? What's the cheapest practice material I can use to learn how to do this? Thin aluminum sheets? Foam boards? Paper mache?

And where is best place for me to shop for fiberglass, carbon fiber sheets, etc?

Just last week, I used bondo for the first time and it seems to me that with enough practice (and money), anyone could create their very own body kit out of these materials.