This article will discuss the steps on how to set up a closed bridge. Follow the following instructions to set up a closed bridge.
First, make a fist lay your it flat on the table.

Next, open up your pointing finger and your thumb.

Next, join the tip of your pointing finger and your thumb to create an enclosed area.

Next, open up the rest of your unused fingers and spread them to make your bridge hand stable. The same image is shown here at opposite views for better reference.

That's it for the closed bridge.