Do's and Don'ts for feedback on a postmortem

Here is how to give feedback to poorly-made projects:
DO:

• Have a moderator that is impartial for the discussion that can set ground rules for a better flowing conversation.
• Focus on the timeline of events and facts.

DON'T:

• Finger point. Instead, send an e-mail containing the summary of the postmortem in a professional manner.
• Finish the session without clarifying lessons learned and next step actions.