Project Goal: Create a rendering of translucent bottles while utilizing the Three Tonality System. 

Directions: Working form a still life or photographic reference, create a pen and ink rendering that demonstrates pure whites, midtones and pure blacks to promote contrast and the illusion of space on a flat surface. 

1. Stretch a sheet of watercolor paper.
2. Using a pencil, create a light line drawing of bottles.
3. Using Brush and India Ink, carefully match up the tones as displayed in still life or photographic reference. Carefully render image.
4. Preserve white spaces on the canvas to maintain highlights. 

Rubrics: 

1. Craft: Clean, consistent and controlled applications of ink.
2. Tonality: Evidence of three or more tones working together to achieve contrast.
3. Highlights: Evidence of highlights (preservation of white spaces on paper)
4. Proportion: Bottle shapes are proportionate to one another. Accurate use of contour lines. 

The most challenging aspect of perspective is drawing curving or circular forms. These are typically sketched freehand, inside squares or rectangles to help get proportions correct.
By the completion of this exercise, you should be able to:

• Use the technique of ‘crating’ – drawing complex forms inside rectangular boxes
• Draw circles, cylinders and cones in one point perspective, from a range of different angles
• Use straight lines (guidelines) to aid the drawing of irregular curves, such as the curving forms of rivers or trees in a one point perspective landscape
• Understand that:
  • Circles or curving forms that face the viewer are drawn using their true shape
  • Circles that recede towards the vanishing point appear distorted, appearing smaller as they get further away

This video explains how to equally divide items in one point perspective, allowing you to draw fence posts, lamp posts, and equally spaced windows or buildings.
By the completion of this exercise, you should be able to:

• Find the centre of any rectangular surface using the ‘corner to corner’ method (this works even on surfaces that are receding towards the vanishing point)
• Divide the surface of any rectangular block into any number of equal parts
• Draw tiles on a floor in one point perspective
• Draw repeating elements, such as fence posts, receding into the distance

Drawing block lettering in one point perspective is a relatively straight-forward task, suitable for a homework activity.

This worksheet illustrates how to stack blocks, cut away portions and add unusual angles in a one point perspective drawing, creating gradually more complex forms.
By the completion of this exercise, you should be able to:

• Draw stacked blocks of different sizes
• Draw blocks that have holes cut out of them, projecting construction lines to find the back edge of the cut area
• Slice pieces off blocks and/or add unusual angles

Once you feel confident with drawing these items, you may wish to add more challenging forms, such as letters and/or triangular shaped prisms.

One point perspective tutorial
The following tutorial explains how to draw one point perspective step-by-step.

EXERCISE 1: CUBES AND RECTANGULAR BLOCKS
Drawing rectangular blocks is often the first one point perspective lesson given to students. It is a simple exercise that provides a solid foundation for things to come.

This worksheet explains how to draw a cube in one point perspective and takes you through drawing these above, below and in line with the horizon line. It introduces the importance of line weights and highlights the effect of positioning objects in relation to the horizon line.
By the completion of this exercise, you should be able to:

• Use appropriate line weights (light lines for construction lines; dark lines for outlines)
• Position a vanishing point and horizon line correctly
• Understand that:
  • Objects above the horizon line are drawn as if you are looking up at them (you see the bottom of the object)
  • Objects below the horizon line are drawn as if you are looking down at them (you see the top of the object)
  • Objects that are neither above nor below the horizon line are drawn as if you are looking directly at them (you see neither the top or the bottom of the object)