If your template is editable (allow to add text), the editable area will be shown in blue, like this:
Step 1: Click on the box to start typing.
Step 2: Type in the text.
Step 3: Press Command-E for Mac or Ctrl-E for Windows. “Form Field Text Properties” window will pop up which allow you to edit the colors, font style, line-spacing and size, etc.
Step 4: Click “More…” for more text properties.
Step 5: Proofread the template and save it after finished editing. Always use Save as… instead of Save.
Step 6: Print the document.