Topic on User talk:Cptmold
I hope the comments others left didn't put you off - believe me, your contributions are most definitely valued, and don't fear breaking something! We all do it from time to time, and since it's a wiki, someone will come around and correct you, if needed.
Just make sure to watch out for any changes others might make to your edits - it'll give you the best idea of what could be done better.
If you're ever unsure about something, even after looking at the guide, open a thread in the forums, ask in IRC, or even ask me directly - someone will always be happy to help!