Don't care about getting all the details correctly. (Your first and last points.)

I know a person whose storytelling is painful to listen, because sooner or later they run into some irrelevant detail they can't remember precisely, and then spend literally minutes trying to get that irrelevant detail right, despite the audience screaming at them that the detail is irrelevant and the story is already too long, so they should quickly move to the point.

Perhaps this could be another good advice: Start with short stories. Progress to longer ones only when you are good with the short ones.