In a word: yes. "Individuals can use their current piercings as their base and build their desired piercing scape from there," she said. "If this is the approach, we strongly encourage that you wear the 'anchor' earrings you plan on featuring in your existing holes as you determine placement for new piercings."
This is because the size and shape of your "anchor" earrings can affect the desired location of the new piercings.