Panicking as have pip assessment f2f review tomorr

Sorry for my yet again more questions,

As for getting ready my MR, what points should I make clear in my letter ? do I make a letter like the form I filled in before the assessment? and do I miss out everything on the assessors form that I dont not agree with?
or do I write my condition and write my points to the issues in order, about each part eg cooking etc,
am I supposed to use a form I get from them to send back or do I just make a letter here?
ever so sorry for all these questions but I fell totally stuck

HI,
well to update you here, I received a decision on my pip and it seems it was lucky I sent a letter to the decision maker before they made a first decision thanks to gordon for telling me about that option,
well it seems that the report was a total fabrication of the actual events but they scored me 8 points , so although I should have scored much higher I am not going to appeal it as I don't want to lose the points I do have with a mandatory reconsideration and be broke for a year waiting an appeal,
even though I physically vomited and uruinated in the assessment they said no proof of these problems, the assessor just lied, not blatant factual errors,, pure down right lies
so I will get the low rate, they scored me 0 for mobility,
a complete fass of government body but I cannot cope with doing anymore and will leave it at that,
I am awaiting my appeal date which I have changed to paper now for my ESA support group re entry,
thanks guys