It is easy to look very dead with common household 'makeup'. Follow these steps to look like you were just exhumed.
All you need is:
Tissue paper (the gift wrap kind)
Light corn syrup (aka Karo Syrup)
Possibly some 'normal' powder makeup/eyeshadow and a grease pencil
Spray temporary hair coloring
Thrift Store Clothes
Miscellaneous Spray Paint