We are getting ready to start making a polar bear out of PM for our church for Vacation Bible School (artic theme).  Does anyone have suggestions on how to shape the chicken wire to make the polar bear form?  Should we shape it in sections and wire them together?  Will it need internal support?  (These will be fairly large.)

This will be my first time working on a large project.  (I've done piñatas with my students in the classroom.)

Thanks, Charlene