Now, for the monster suit, this is what the notes with the clip had to say:
Laryy built the prototype mould full size iin his usual papier mache' fashion. THEN, with a coat of Viva paper towels and liquid latex painted over the creature, the sculpture became a POSITIVE mould to shape the costume. Oncetthe latex skin has cured, Larry carefully cuts away the skin from the mould, then carefully reassembles it with more liquid latex.You gotta love it! For more details go to the clip's Youtube page here.