In this making of David Moratillaexplained the way in which he created his “close-up portraits”. Because he mainly focuses on the texturing/shading part, you sure see this one. He showed us step-by-step how he created the texture by switching between BodyPaint and Photoshop or how he used “low key” lightning, which gives great result for portraits.
He used Maya, ZBrush, BodyPaint and Photoshop for modeling this astonish image.
Source and full article: 3DTotal