I've grown a Philodendron White Princess, and they do well in bright, indirect light. Keep the soil moist but not soggy, watering when the top inch feels dry. For vibrant variegation, make sure it gets plenty of indirect light, as too little light may lead to less white variegation. Regularly cleaning the leaves can help them stay shiny and healthy. Experimenting with light conditions can sometimes encourage more variegation. Do you have any other specific care questions?