What mistakes do athletes make when submitting sponsorship proposals and decks?

Common mistakes include: spelling and grammatical errors (which indicate lack of care about self-representation), copy-pasting the same generic proposal to multiple brands without customization (sometimes even mentioning the wrong brand name), not having a clear plan or goals when asked about their racing program, and not taking time to present themselves properly. Sponsors see these errors as indicators of how the athlete might neglect other aspects of the relationship.