What is the best way to make a SMALL raised bed garden?

Image by the.sprouts
they’re putting on a shield to prevents weeds and other plants from growing in once we put the raised bed on the soil (so you’re looking at the bottom of it)

—
part of sprout’s gardensense project [1]

[1] gardensense.thesprouts.org

Question by ritabird1: What is the best way to make a SMALL raised bed garden?
I want to have a small “postage stamp” garden next spring and summer and have horrible soil in my yard. What is the best way to build a small raised bed?

Can you help? Leave your own answer in the comments!