The basis of it is this. We all made ourselves. I told everyone we'd be starting at level 1 and to make your character as if you were your D&D self.
Be careful with this. Even with the best of intentions, that sort of thinning and blurring of the line between IC and OOC can lead to disaster. From personal experience concerning playing in a D&D-derived game in which we played ourselves with powerups, I have three more specific warnings to give:
1) Remember that players are likely to take things that happen to their characters more personally -- and not purely due to failure to separate IC and OOC. If someone's upset about the events of the game, don't just act like they're whining about something that's only a game -- listen.
2) Don't go too dark and gritty. That can get traumatic. Especially don't center a game on the players'/characters' darkest aspects.
3) Don't get too high-concept. IC and OOC will be harder to keep seperate. Changeling fantasy like you seem to be doing is cool. Centering a game on deep self-exploration... not so much.
Keep players-as-themselves games light and fluffy and you're good. Self-insertion Evangeleon is bad. -- Pteryx