(no subject)

[champignon.livejournal.com]

brief intro and a question
Hi there, I just joined. Let's see... I like to make things, though mostly I don't deal too much with fabrics and yarns. I like collage, decoupage, painting, candle making. I like to make powdered incenses, bath salts, and essential oil blends. Soon, I want to try my hand at making books. This looks like a nifty community and I'm glad to have found it.

And the question...
Lately, I've become mesmerized by card board. I've been cutting up boxes and using the card board as a base for painting and collaging. The only problem is that everything I paint or glue or gel-medium onto cardboard tends to warp the cardboard or make it curl up. It's very annoying and doesn't make for very good postcards and paintings. Does anyone have any tricks for keeping card stock and cardboard flat as a base for collage or painting?

Thanks!