1. Insert the horizon
line and groung line.

2. Locate the leading
edge and the two
vanishing points.

3. Join the leading
edge back to the
two vanishing points
and draw in the two sides.

4. Complete the box
in perspective by
joining the top edges
back to the vanishing points.

5. On the front face
draw diagonals from
corner to corner to find
the centre.

6. Join the centre
back to VPL and
extend on to find two
points as shown. Drop a
vertical line through the
centre to get the other
two points.

7. From the four
points that have been
located draw a
freehand circle.

8. The construction is
repeated for each
side.

9. Again the four
points are used to
construct the right-hand
circle.

10. Again the same
construction is used
for the top of the cube.

11. Again use the four
points to construct the
top circle in perspective.