Set Width & Center e-Newsletter

The formatting for this plugin is actually pretty atrocious. You state specific widths for the templates, yet when they actually go out in email, they are free flowing and U G L Y.

Please advise on how to for the template width. Is it through the Branding HTML/text?

Also, do you have any examples of how to utilize the Branding HTML/text? Where does it show up in the newsletter?