Choose a subject in front of a background with depth. Select your shortest focal length and take a close low viewpoint, below your subject. Find a natural point of focus and take the shot.
You’ll see that a very wide lens together with a close viewpoint creates extreme perspective distortion. Gently receding lines become extreme diagonals and rounded forms bulge towards the camera. Space appears to expand. The low viewpoint adds a sense of monumentality, making the subject seem larger than it is, and tilting the camera adds to the effect as vertical lines dramatically converge. Not the ideal combination for a portrait shot!
For this exercise I took several images to try and demonstrate the point being made in this exercise. I chose a wide angle lens, an 18mm (27mm in 135 format) and used a low shooting angle to create the sense of monumentality referred to in the course materials.
The humble Victorian post box that was the subject of the shot is given the appearance of being quite grand even though in reality is is actually really quite small!
The point made in the course materials about this not being an approach for portraiture is well founded. I did take two images of my daughter using this technique which she utterly forbad me from using or sharing!!!