I consider this a very helpful post for the viewing pleasure of us all. Well done explanation of the basics everyone should know.
I'm amazed at the competence of the current crop of digital snap shooters. Paying a little attention to basics and reading your manual will reap great benefits when doing close ups. As Brian went through, using a small aperture (the f8 mentioned) will do more to get you focus over the whole model. Different cameras use different methods to adjust for closeups, so learn yours and give us some eye candy!