Find the Database you want to modify and click the Database link.
Click the Templates tab. A new sub-set of tabs appear.
Click the Add template tab.
Look at the Add template textbox:
Notice there is a table with your field names on the left and the names repeated between double brackets on the right. The bracketed text is special code; you should not modify this text. The names on the left, however, are just plain text, and you can make changes to this text.
Change the text labels to make them more readable: