I start modeling the clothes, added the concept in 3ds max as a background and modeled the bikini, the mask, some belts, the eyes and the sword.
Each piece was modeled in 3ds max and after retouched in ZBrush to get more detail from the normal map I extracted a channel “dirty” with the help of crazy bump.
The dirty channel with a lightmap and the occlusion is added to the diffuse. Later I configured a vray material until the specular reflection is achieved that I am looking for.
In the case of gas mask, I modeled it from a redesign that I did in Photoshop. I made a diffuse texture, normal and specular map. For this object I choose to make 4 sub-materials for different types of reflections (high reflection, little reflection, more blurred reflection and nothing).

You can also create a glossiness map as in other objects but sometimes I find it more useful to do it by this way.
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