This item is a fixed-pose model of a science-fiction/anime item. It does not require either cement or paint to complete or use.
Here's an excellent Rider Mask Display entry featuring a scaled-down prepainted PVC replica of Kamen Rider Kuuga Might Form's mask attached to a custom display base. The mask features clear red eyes, with enough room inside the mask to attach your own custom LEDs to light up the eyes if you like. About 14cm tall before his horns are attached; after you attach the horns, the mask will be ready for display!