From the Roll20 home page, select "Create New Game", then go through through the prompts. Picking a character sheets is the very first option, as I showed in my post above. One you create the game, itr will show up on your home screen: enter the game, go to the journal tab and select "+Character". Once you start the character creation, Change the name to whatever you want, then Save Changes. At that point, you'll be prompted: Use charactermancer, Create NPC, or Edit sheet directly. Pick Use Charactermancer if you want to use that or pick Edit Sheet Directly if you want to create the character manually.