Rav Menachem Levine Preparing for one’s Final Journey: A Torah Approach to Preparing for your own Funeral Congregation Am Echad, January 1, 2018

  Catalog of classes given by Rav Levine.
 

Rav Levine's lecture

The video is also available on YouTube.

Addendum. Halachic Living Will forms for many states prepared by Agudath Israel of America are available at www.jlaw.com/Forms/.
A fillable form of Halachic Living Will for California is available here.