If my email is firstname.lastname@example.org, what would be my OpenID?
There's a lot of other questions answering this. Searching for openid would have helped you to find them easily.
Anyway, the google openid is www.google.com/accounts/o8/id
An advice, remove the plain text reference of your email address so that it won't be picked up by robots crawling the web.
Try looking over this thread on superuser.com: What is OpenId URL for a account. As dex pointed out, the answer is