Draw One-Point Perspective
By Helen South, About.com Guide
7 of 10
Draw one-point perspective - step five
H South, licensed to About.com, Inc.
Now that you have finished constructing the box, you can erase the vanishing lines. You can keep all the lines inside the box if you want it to be see-through, like a fishtank, or, you can carefully erase the back corner - the bottom left, back, and lower back lines, as I have done in this example.
Perspective Word Definitions