I love Halloween!  It is strange that I hate horror movies, and gory stuff of any kind. . .but I love haunted houses and making monsters! 
So you want to be a Zombie "...um  - brains...."   Are you a freshly dead zombie or have you spent some time rotting?  Either way you'll need to find clothes that are old and you don't mind spoiling.  To make them "realistic", give them some grass stain, rub on some dirt, spill the coffee on them, anything to make them look like you sleep in the graveyard.  Make- up can vary from just dead skin with signs of infection to oozing wounds and corpuscles with decaying peeling skin.  Oh and don't forget the blood.
Dribble it around your mouth and spill some on your clothes.  Remember old blood is dark almost brown.  The Halloween bright red blood is really fresh. - you must have just eaten.

TIP: Don't forget to apply make up on your neck, ears, hands, arms or any where skin is showing.  If you are going to use liquid latex for special effects, be sure to test first to see if you are allergic!  Follow the directions and be sure NOT to apply to any area with hair.  When removed, this will really, really hurt.

So my fellow zombies and wannabes, perhaps I'll see you in Asbury Park on October 30th at the NJZombieWalk!  and Happy Halloween!!