I'm making more birds-this time I'm making paperclay ones. I start with a form made of old tin foil. It's the easiest to sculpt, and keeps the shape you want better than crumpled paper-but that can be used with tape. I use duck tape over the tin foil, then cover it all with paperclay. I use a lot of water when I'm using the clay, to make sure the bumps are smoothed out. The hardest part is waiting for it to dry.