So it was a play with the lights, that Manuel Candanedo do, with some help of the tools by myself in Mudbox, for the render. We could't import to maya due to the huge amount of faces (about 400,000) so we decided to made it with the render of mudbox. clic to enlarge.
Sólo necesitaba las luces, jugamos para ponerlas bien... entre M. Candanedo y yo (diciendole como usar algunas herramientas de mudbox) así quedará el final para el menu principal.