The forms are available on the web, for example here at People's Lawyer (some UT law prof, no affiliation with him).
Here is another site, claiming to have the forms for each state. Caveart Emptor. Again not affiliated with me, and I provide no warranty. If you want to be sure, contact a lawyer and make sure several different people know your wishes are explicit.
I should note, that posting a living will on a blog or web site would leave a public and near unalterable trace of peoples intentions; at least if Google and other unnamed agencies continue to archive all walkable web pages, it will provide a permanent and public record.
Go blog your living wills, either way you want them.