Verified answer

Airbrush makeup. And a LOT of it. Some makeup artists would have the ability to do this, but more in big cities. I don't know where you're at, sorry "/ also - airbrush your nails as well as your hands - since they have no nail polish. Long long fake black lashes, and remember to draw black lines at the mannequin "joins" like around your shoulders and your neck maybe.

Lots of doll-like makeup.

Start with a mineral foundation, and concealer if you have anything the foundation doesn't cover. You want your skin to look flawless. Use some translucent powder to set your foundation. Take a bright pink blush and brush it on your cheeks. [Just on the apples of your cheeks if you want a fake, doll-like look, or put it on like regular blush if you want a more natural, mannequin look. Yeah, I guess that doesn't make tooo much sense...haha]

Use a tacky colored eyeshadow because lately, a lot of mannequins I've seen have really funky makeup. Try green or somethinng. Put it just up to your creases. Use black eyeliner if you want, or skip it and just use false eyelashes.

Sorry if this isn't what you're looking for. This looks reaaaallly cute in my head. I might even be a doll for Halloween now haha.

Put a loott of foundation on,

and then some black eyeliner,

and lotss of black mascara,

but the key is a bunch of foundation.

Use alot of makeup Other then that I dont know. Oh and wear a wig!!

Goodluck