Dad bought something for the fridge and it came in a rediculously large box. now I have 3 sheets of 5 x 2ft cardboard..

But I'm really scared if I work with it.. it'll end up showing way too obvious that I used cardboard.. how do I work this stuff without it ending up looking cardboardy?

might be a nubby question.. but this'll be my first costume, and I really dont want it to fail.
-still cant find anywhere where they have craftfoam...-

That's a tough one... uhm, unless you're covering it with something else rather solid (foam or plastic, etc.), you're probably going to see those little ridges on the surface from the corrugated middle layer almost no matter what you do...

But here's a link to one of Featherweight's many famous cardboard tutorials.

I would also check out chipboard... it's sort of like a cardboard, except denser and with something of a rough finish. I've seen some AMAZING things done with it (tried to find one of them, a Mandalorian helmet) as it can be bent to some interesting shapes with a little water, and also seams can be smoothed out that way too I believe (though don't quote me on it).

Here's a little information on chipboard: Wikipedia portal, because apparently you guys call it something different over there. :P

I think I'll be using cardboard for the wings, as I'm pretty sure they wouldnt survive too long so I'd need something cheap and replaceable. but thanks for the link. ^^

You can try shoe box type cardboard as well, its a little stronger and has a nicer finish. Its what I used for Arcee's kibble and its both holding up wonderfully and not looking like cardboard thanks to its fabric wrapping and spray painting.

Well I say cover it with funkyfoam.

It's rather nice looking, it comes in a bunch of colors, and it's thick, so the ridges won't show.
They also have rolls of white and black. :3
I'm using it for Soundwave and so far it looks pretty good!

As a hint, if you do use funkyfoam, hot glue (at least lowtemp, far as I know) doesn't warp it - but it will put these terrible ridges in it if you glue the middle, unless its a small piece.
So you'd have to glue the edges. :3

It's rather easy to work with cardboard if you ask me though :P
But there is several ways to coat it, either glue something on it, a thin layer of well, funky foam or something the like. Or use Gumtape. It also strengthens the cardboard and is easy to paint on, it can be found in most art stores. I hope it's to any help :)

You could also try papermacheing/decopaging it which will smooth it out and sand smooth.

And if funky foam is the same as craft/fun foam then you can use hot glue with it, even fairly hot hot glue which will actually meld with the foam for a more permanent adhesion.

Since you can't find any foam, I actually think the paper mache or gumtape method as described here would work best. :]

Funky,fun,craft- foam, dekorgummi, they are all the same one :) troublesome when stuff has a lot of names. ^_^

Moving this to "Miscellaneous".