Shading is like... The colors you added. If you make a character with red hair and then put some dark red it has been "shaded". Shading: "The darkening or coloring of an illustration (drawing) or diagram with parallel lines or a block of color."
It looks like if the Wolf's son hid Riding Hood and trying to convince his dad he actually ate her. I wonder what really the picture is about! o.o Anyway I like the image and the way you did the characesr!