1. He is such a nitpicker!
2. I hate to sound like a nitpicker, but I found a comma missing in your third paragraph and another comma missing down in the tenth paragraph.
3. I hate to sound like a nitpicker , but I found a comma missing in your third paragraph.
4. The nitpicker who criticizes her is her best friend Laura.
5. A nitpicker who obsesses over each dime is too tense to live with market risks.
6. A nitpicker , obsessing over dimes, is too stiff to place orders.