Inspect the terra cotta object to make sure the surface is clean and dry before beginning. Wipe the item with a damp, absorbent cloth if dust or dirt are on its surface. Allow the terra cotta to dry thoroughly before proceeding.
Decide where you want to write on the terra cotta object. Place a stencil on the item to help you achieve the look you want.
Write the letters or words with a fine or medium-point permanent marker on the terra cotta tile or pot.
Look at the terra cotta item and make sure it's free of dust and dirt. If not, wipe the surface with a damp cloth and allow to dry before moving on to the next step.
Leave the lid on the terra cotta pen and shake it for approximately 30 seconds. Open the lid of the pen and press the tip gently onto a piece of paper several times to stimulate the paint flow.
Write on the terra cotta item just as you would with any other writing implement. Be careful not to press down too hard with the pen or the paint may run.