When I decided to reproduce Salvador Dali, I did so with the specific intent of copying one of his most famous photographs (by Philippe Halsman), and in particular I wanted to capture his unique look. I wanted to do the work as much as possible in ZBrush, including shading and rendering, and to finalize the composition in Photoshop.
After collecting a fair amount of reference photographs on Google, I started with a very low standard basic mesh in ZBrush. I turned it into a DynaMesh and I used it as the base for my sculpt (Fig.01).
Always refering back to my references, I started to sculpt the main physical features using mainly the Move and Clay Buildup brushes. At this point I retopologized and reprojected details on my new mesh, obtaining a good base with a clean topology (Fig.02).