Contour shading works equally to Hatching, but your strains will Keep to the curves of the item you happen to be drawing. If you are drawing a curved object then employing contoured strains about straightforward hatching will give a lot more illusion of shape. The following video options excerpts https://inkdrawingforbeginners37414.educationalimpactblog.com/58292928/not-known-details-about-ink-pen-drawing-techniques