Love this stuff, create your monster base, cover in burlap or old clothes and cover them in this mud. Monster Mud Recipe - Joint Compound tinted with Latex Paint & "whipped" using a Drill Mixer attachment.
The Weeper: How many kids would dare approach a porch with this guy sitting there? Could be either an awesome prop or an amazing costume depending on how sadistic you're feeling toward the trick-or-treaters.
wall breaker, use cheese cloth with the monster mud-it shows the details better. Used foam skull from Walmart (cut the jaw off to make it open), yard sale plastic rib cage, hands from Spirit Halloween, left over plastic bones.