[Natsu]

Google has a form you fill out that makes you put in all of the proper info. The DMCA itself spells out the requirements for what you must include and it does have some provisions that describe what happens if the notice is only partially defective.

Formatting isn't really an issue, the real issues are whether the notice contains the proper information and whether it's sent to the right place.

As always, get proper legal advice if any of this information is of more than academic interest to you.