Exercise - Value by Size or Proximity

Changing Value When Drawing in Ink

How does an artist alter the values in a drawing when using a fountain pen or dip pen?  The value of the ink itself is a constant whether black or a lovely color.  Values can, of course, be altered if using a waterbrush in addition to the pen, but how does one express value changes with only the pen?

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One way is to create patterns within the shapes, altering the space between the marks within the shape.  Choose a simple shape as your mark, for example, a circle, square or triangle.  Create a value scale by changing the proximity of the shapes to one another as shown above.

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Another way is to alter the size of the mark.  Using the same shape, create a value scale by changing the size of the mark while maintaining the space between the marks.    
Exercise - Value by Size or Proximity