How to use theme_hook_suggestions() I'm on page of my website and I'm viewing it with the theme developer module, which gives me a lot of information. It gives me some theme suggestions based on theme_hook_suggestions() which are:

html__profile_personal
html__profile_personal__%
html__profile_personal__113
html__profile_personal__edit


How can I create a new theme for this page?  What naming convention should I use, given the info above?
Replace the underscore with a hyphen, and you get the name for the template file.

If the suggestions you are getting are the ones reported by theme_get_suggestions(), then they are the ones returned from template_preprocess_html() for a page at /profile_personal/113/edit.

The first suggestion would be applied for all the pages with a path starting with /profile_personal/; the last suggestion would be applied also for a page with path /profile_personal/edit, and the one before the last would be applied also for /profile_personal/113/revisions. 

Whichever you choose, you should always check the path of the currently show page, via arg().