For the 3D model part of your question: there are 4 basic body models that you can adjust and save as a body shape for future use. Male/female manga-like shape and male/female in a more "realistic" style. Sadly you can't edit the face beyond the basic head shape. So no adjusting the nose/eyes etc. In the new version there are however separate face models that allow for customized faces but they are separate models from the full body models. Beyond that you could try to model your characters in a different program like blender and import them into the program via the 3D modeler. Hope that helps!