In a rough sketch, hatching can made with a motion that mimics your first, tentative lines, achieving a preliminary tonal and modeling intention.The strokes can be decisive or shaky. This technique relates the construction of shadows to the expressiveness of the stroke, so it is linked with calligraphic matters closer to the realm of writing. This allows for much greater gestural expression in a sketch based on hatching.
A good way of setting up the drawing is by practicing tonal watercolors. Before starting the drawing itself, we place the model in front of a single source of light, because shadows become confusing if there are several sources of light at one time. Before hatching, we can lightly draw the outline of the figure in order to have a template or guideline for working. Then, using a flexible brush, we quickly and nimbly apply dark watercolor on the areas of the body that are shaded, preserving the white of the paper for the more brightly lighted areas.You will have to forsake any intermediate tones: precision is unimportant in this drawing, so don't waste time repairing forms and outlines.
2. The tones that serve as the for the sketch are now complete. The series of spots traces the structure and principle masses of the figure and provides information about the location of the light source.
1. In these three sequences we shall see how to practice sketching with spots. First, using a tortillon or a cotton ball lightly stained with chalk, we draw the shaded parts of the model on the paper in a highly synthetic, simplified manner, leaving the lighted areas blank.
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