I successfully asked the Bodhisattva to send my son. I want to send a banner to the Bodhisattva. I don't know what to write for content

Before going to the temple or the Buddha statue in your home, thank the Bodhisattva for blessing you and making you become attached to this child. Swear to do more good and pay more. Let more people benefit and infect more people with your kindness. Bodhisattva doesn't need your flag. What he hopes is that more and more people will get out of the way. Doing more good deeds and carrying forward the true meaning of Buddhism is the best way.