My understanding from reading and writing on Wikipedia, is that you are discouraged from writing about yourself. And yes, notable persons should be featured. However, many of the authors who read here ARE notable, or their friends are! They have won many awards in children’s literature and should have pages on Wikipedia.

So, if you want to try Wikipedia, please read their guidelines. You can start from their basic introduction and move on from there:
http://en.wikipedia.org/wiki/Wikipedia:Introduction

It shouldn’t be done lightly, but don’t feel intimidated, either.
Darcy

This is incorrect. Wikipedia does not prohibit people from writing about themselves; it merely strongly discourages them. It also strongly discourages people from writing about their friends, family, or their works.

It is a grave error to believe that you can advertise yourself, or your friends, on Wikipedia, if you are a non notable person (e.g. a mostly unknown author). Chances are that your article will be deleted, and that a permanent record will be kept that the article was deleted due to its subject being non notable. Because Wikipedia has such high standing with Google, this permanent record may well be the first Google hit for your name, or your friend’s name, reminding everybody that you or your friend is a nobody.

In short, steer clear of Wikipedia.