|You MUST be sure what YOUR state Notary Public Handbook / Manual / Law says.|
Be careful; it goes without saying (almost) that you should be aware that in SOME states providing a blank form MAY be considered Unauthorized Practice of Law.
Many CT Notaries, especially those in Town Halls, refuse to have anything to do with either a Will or a Power of Attorney. I'd love to see a test case about whether they can legally REFUSE to notarize the signature on a PoA! (Well, not really. That would mean less general Notary work for me and other CT Notaries Public who take the Handbook seriously.)