This is not technically sculpture that I'm offeringhere, but rather modelling, and then casting... 

Sculpture consists in subtracting material from a basic block, like stone or wood for instance. 

Modelling is basically the opposite way to work : adding some material such as loam or wax, until they get to the escounted shape.

The result is moulded with silicon resin, then casted in plaster which finally will be skated. Different finish are available, polished plaster, red loam, various bronze finish, ebony...

Here is a sample : a plaster bust with dark bronze finish. Some more
samples coming soon, with different sheen...