I feel like this is where things went wrong:
36.f4 Qd5+ 37.Qxd5 Nxd51 vote Nxd5 (Morecoin Freeman)
And now we are losing.
More recently, leading up to this end game, we made an error as well because we became worse. We must have overlooked something but I believe we did pretty good overall since letsplayagame is a great chess player.
I look forward to learn from his suggestions and analysis when our game is finished.