Not deal breakers but essentially toilet paper on your shoe in a business meeting:
1. Describing your own book as brilliant or using other laudatory language.
This is like describing yourself as good looking. It's much more effective if I see that for myself.
2. Talking about yourself in the third person.
Don't ever do that.
A memoir is queried as "I" not "your name."
3. Using a word and then telling me what it means.
Most often I already know the word.
If I don't, I have a dictionary I love to fondle.
4. "Recently completed."
That evokes an image of damp ink, which sends shivers down my spine.
I want to read something that you've finished, revised, let sit, revised, let sit, and slaved over. I don't want it to be just finished, I want it to be finally finished. And you can avoid all this just by leaving out any reference to when you typed The End and meant it.
5. Sloppy work
6. "Please disregard the typo below."
This one befuddles me.
If you've seen it, why don't you fix it?