Squint at your subject. Begin by squinting at your subject or your reference photo. Squinting eliminates most of the distracting detail and small value changes. You’ll notice that the white or light-valued areas stand out clearly, while the rest of your visual field is reduced to a midtone gray with darker sections.
This tip is an excerpt from The Artist’s Magazine‘s Drawing Board column by Bill Teitsworth. To read the full article on how to make the most of your value sketches, click here and order The Artist’s Magazine 2009 Annual CD.