X glebe digital: the guy (sitting on the left) is outside from the shadow...this you can see also wire image. Thanks for your comments.
X Mattia Sullini: he he...I do not believe that this is one good solution! thanks.
X Tomas: yes axyz design, business 2. thanks
X Hervé:

oh yes invite is valid for all!!! thanks
X BEM: I use archicad in order to construct to all the structure, archiforma or Rhino for details or models particular,onyxtree for trees & shurbs and axyz for people. I add then objects of library commercial (dosch design usually ) of 3d objects from internet web (
www.e-interiors.net for example).
For onyxtree: if you use maxwell beta version multimaterial is ok, but if you use rc or V1 is convenient to divide in various objects your original objects and to assign a single material to a single object.
ciao ciao