Potato, {empty space}, mix masks with face paint, dressed up for masquerade, or have mask with fancy pattern and use body paint,ink,jewels etc and continue it over body {birthday suit}.
{empty space}, Shiny object ohhh, mask with reflection in mirror, have subject turn slightly to me with the mask half way down revealing eyes with contacts in {bright colour} with a similier patern around eyes as on the mask {different colour though} thats the left pic. Now the right pic will be similier but the subject will be just normal but the mask will be brighter more intence {photoshop}, each pic will be taken at angle and try to capture a bit of mirror in front of them, with the pics faceing each other use a piece of fancy frame down centre, so duhh it looks like there looking into a mirror.
bloody hell that was hard work, maybe tonight while in the shower i will have some more ideas.