ZBrushCentral

The Fundamentals of Sculpture?

Hi guys, i have an question, i started my studies on 2D and the thing that i most heard from the good professional 2D artists are about de Drawing fundamentals, perspective, gesture,composition etc, 99% when somone ask to a 2D artist what is the problem with his draw the answer will be the fundamentals, and now as a 3D artist i want to know from you guys what are the fundamentals of Sculpture? what is the most important bases that a digital Sculptor need to now to have an good and consistant work?

Sorry for the bad english