From WoD Gotham
To Edit your character you press the Edit Character tab on the right hand side navigation of the web page.
You will be presented with your Character Sheet to edit. You can go back and edit your sheet while you're in the sanctioning process.
Note: Once your character is sanctioned you can only edit your character's Character Description Field. This field populates a generated Character Description page which shows up as a link in the right click menu when you right click on a user in the chat's user list. The link is labeled Character Description.