If you mean the site, the answer is you don't.
If you mean your own account, you go to your Bio page and click on "Edit this page". You can make any changes you want as far as your preferences, your watchlist, and your personal information. You can also change your settings by going to My Settings.
yes you can
Click on your username (top left of the screen) - Click the link 'Edit this page' - make any changes you want and don't forget to save the changes !
You can customize them online.
you can customize batting gloves at rakmak.com
If you want to contribute to the best of your abilities, then yes, you should create an account on WikiAnswers. However, if your intent is to vandalize WikiAnswers, then do not create an account. But even if you don't create an account we can still ban you so just don't vandalize wikianswers. Also other users can't message you if you don't have an account and you get to customize your own bio page if you have an account.If you want to ask something or answer it would be good, yes. If you don't have a account no one can talk to you and you can't leave messages to anyone.
You have to install mods in order to customize character appearances.
Drive to your garage and select "customize vehicle"
Yes, but you have to have enough credits to buy things to customize yourself.
To customize cars you have to have completed the mission Cesar Vialpando; the mission where you have to customize a low-rider and then compete in a low rider competition.
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Unfortunately you cannot customize your coner's banner.
When on the customize page, erase everything in the address bar up to the word customize. Then add -classic to the end of it. That should change it back to the old layout!