It still doesn't look like i want it to look. Yesterday something i did to a material made the renderer shit on it's pants and in a fit of frustration i deleted all the materials and started to re do the shading from scractch.
It's VERY POSSIBLE that i'm asking blender to do something that should be done on post, but i want to get as closer as i can before using another software.
Made some experiments with the renders and GIMP and looks like a postprocessing step will be inevitable.