Clean the ceramic bowl with rubbing alcohol.
Cover your working surface with plastic or some other material.
Place a large piece of plastic wrap on the table.
Place drops of alcohol ink in the colors of your choice on the plastic wrap. Make sure to fill most of the area.
Wrap the plastic wrap around the bowl, adding more ink if needed, where there may be too much white space.
Set the bowl to dry for 24 hours.
Carefully pull off the plastic, checking to see if it is mostly dry.
Use more rubbing (isopropyl) alcohol and paper towels to remove any ink from the inside and bottom of the bowl.
Continue to allow the bowl to dry and harden for another day.
If desired, use a spray on or brush on polyurethane as a protective coating.