How it works
A username is the name other people see online, like a name tag that lots of people read.
Rule one: keep clues out. Clues are your name, school, town, street and age. Join enough pieces, and people you do not know can guess who you are.
Rule two: pick a name you will still like later. Ask: would I say it to my teacher, would I like a grown-up to read it out, is it kind?
A picture is part of the tag too. A drawing, a cartoon or a flower is fine.