I just had a hard fought loss and would like some people to check it out to see what I did wrong. How do I post a histograph replay?

I hope you mean that replay after the game.

The easiest way is to save the turn before your loss. Then they just press enter and get the replay.

You can also post it here, a lot of people is waiting to give advice to you. :)

Well any save could be reviewed using CPRsuite's tool "viewer". It can be stepped or fast.