Nose Sculpting: Step 1. Basic face mold for sculpting nose.
Step 2 . Sculpting the nose using clay and reference (self image). 
Step 3 . Mold made for sculpting nose in silicon material
Step 4. Intrinsic painting for desired skin tone, before pouring in to the mold.
Step 5. Final result, silicon mixed with paint & the mould is baked out of the oven.
Model - Self.
Face Cast, material - plaster.