Disassemble the mannequin.
If matching the mannequin’s current “skin” color is a concern, take a smaller part such as an arm to a hardware store paint department. Employees at the paint counter should be able to provide a matching satin interior paint.
Use the sandpaper to smooth imperfections on the mannequin. Wash the mannequin with clean and wet rags, making sure to remove all dust, dirt, grime and anything else you don’t want to cover with paint. Allow the mannequin to dry.
Paint the base-coat skin color on the mannequin using spray or brush-on paint. Apply it in light coats and allow to dry in between coats to achieve a smooth, skinlike finish. Spray the satin sealant over the base coat. Let the paint dry thoroughly after the base coat is applied.
Use acrylic paints on smaller areas of the mannequin. The areas and colors painted are entirely up to the painter. The paints can serve as toenail polish, lip gloss, bullet wounds, among other possibilities. Thin the paint with water to make blue eye shadow or a brownish grime to rub behind the ears. Use wet rags to wipe off excess paint.
Give the eyes special attention because what you do with them can be the most important part of the overall paint job. For a realistic “human” effect, base coat the eyes with an oyster color. Then base coat the iris with the chosen color. Lighten the color used on the iris with a little white paint or another light color, then paint a smaller circle with that color inside the iris. Paint the pupil in black. Use the oyster color to draw a curved highlight line on the left side of the pupil.
Spray satin sealant over the freshly painted areas. When the paint job is finished, go back with the brush-on gloss and apply to the eyes, lips and other areas that should appear shinier than the rest of the mannequin.
Allow the parts to dry, then reassemble the mannequin.