Wrong font choice — think of the font you choose like the clothes your resume wears. (halliecrawford.com)
Whether it is because of bad cover images, the use of totally wrong fonts, or what, indies have done some terrible covers. (madgeniusclub.com)
However, if you choose wrong font or inappropriate design, but have impressive accomplishments, great work experience, and strong educational credentials there is high probability that your mistakes will be forgiven. (prime-resume.com)