I'm trying to make a decent looking Spider-Man to add to my gallery , and I was up until 4:30am making textures and bump maps. I know I have a few flaws in the texture as pointed out in the picture (b), but what I am trying to achieve is making the eyes look as if they bubble out a little. I got the effect by applying a displacement map only to the eyes, but then I lose the texture in the rest of the mask. when applied together in same image I have to set it to an extreme to get the eye effect and the rest doesn't match the costume. Is there any way I can layer 2  displacement maps on 1 object, or 1 displacement, and 1 bump map?

                                                                                                                    

Poser 10

Octane Render

Wings 3D