Draw and render Female back figure nude, behind or butts grey scale value

Draw and render Female back figure nude, behind or butts grey scale value. I am working on another up coming full-length feature tutorial. Here is another part of the new feature tutorial (Female Manga Fusion II). This one will be a combination of realist and stylize with many female anatomical sketches videos, drawing videos, and rendering (or painting) videos.Here is a gray scale sketch of