VERY hard! But if You'll want a puppet go buy the Rizzo Mech from propologist For $150 as I recall. But if Your making A doll for like A Small Rizzo the Rat fan (A baby or Kid Age's 5 -9) Stick a barbeque skewer at the top inside and make a cardboard Mouth peice Loosesly Glue it to where You want it! I suggest making A Doll for The little ones Or for you. Have Fun EVERYONE! Also Cookie asked If I can Make a Tutorial for A Gonzo Poser. It will only be a Head thou My cousin Can't get hold of the Original sheet Foam body. (Scrunched Up Kermit Face) YEESH!