Here's a quick warm-up exercise for one-point perspective:
- Start by copying the page I drew.
- Set it aside and sketch your own boxes in one-point perspective.
- Draw these boxes in different directions - up, down, left, right, and into the distance.
- Vary the box sizes and dimensions.
Remember, warmups are meant to be repeated for 5-10 minutes before drawing sessions. Also, don't forget about the warmups from earlier in the course that help you improve your straight lines (Straight Taper, Trace the Ruler, Connect the Dots)