I believe that this project deserves a post of it´s own now.
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I made this rough last night and I´m modeling it now to test the Stencil Kit for Blender.

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update 2

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robotic helmet

3d model / blocking

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update 1

While working on the modelling, I´m making test render to see how everything is behaving. The stencil kit will be used on a old, worn out metallic version of it. Below are a few screen grabs.