What's a good way for playing a child character?

what's a good way for playing a child character?

By being a little ASSHOLE!

By not doing so. Just play a halfling.

By playing a well thought out, developed character who has thoughts, feelings and goals.

And also being a little asshole because that's what kids are.

In real life, sure, but this is fantasy user.

In a way thats not annoying to the other players.

Nobility - children of nobles were treated as equal to adults since very young age. Bonus points if you can make arrangement with fellow PC to run your chaperone.

Alternatively Charisma-based spellcaster and just be a cute CUTE!

this is a good point. In a fantasy game you can be a huge asshole

You don't