A written business plan, specifically a traditional, 20+ page one, can be a negative sign of being over-prepared.Having too many or the wrong people at the pitch, like consultants or non-full-time employees, is not ideal.An overly-thoughtful exit strategy may indicate a lack of focus on achieving unicorn potential.Talking excessively about the investor's other investments or portfolio can come across as strange.Discussing specific deal terms too early in the process may give the impression of over-engineering.