STEP 1 Sketch the Lighter Values
Use a 4B pencil to sketch the lighter values, keeping the lightest ones the white of the paper. Use pencil strokes that feel comfortable for you. They may be vertical, horizontal or even scribbles.
In this exercise you will be focusing on values instead of lines. The idea of a value sketch is to define form through light and shadow instead of lines, so use shading to give your coffee cup form. Remember, this is not intended to be a finished drawing, so relax and enjoy the process.
STEP 1 Sketch the Lighter Values
Use a 4B pencil to sketch the lighter values, keeping the lightest ones the white of the paper. Use pencil strokes that feel comfortable for you. They may be vertical, horizontal or even scribbles.
STEP 2 Sketch the Middle Values
Continue adding layers for the middle values, gradually giving form to the sketch.
STEP 3 Sketch the Dark Values
Finish by adding more layers for the darkest values. Use a kneaded eraser to lighten some areas if you think they need it.