I never knew this

Blond or Blonde
This one is tough because the rule is a bit confusing. Proper usage as a noun requires that you use blond when using the masculine form, "The blond jumped in front of the car, using his body to shield the little girl." and you'd use blonde when its the feminine form, "The blonde flipped her hair, confident that all eyes were now on her." However, when using this word as an adjective, you'd drop the 'e' whether referring to a male or a female. "Her blond hair hung about her face in limp strings."

Thank you for sharing, little errors like this can mar efforts.