self-recommending letter to a company?

Self praise is no recommendation. Thanks.

Write about your accomplishments. Do not be overly humble. Even if you normally don't like boasting about your accomplishments, now isn't the time to shy away from talking about them. Keep in mind, though, to also be realistic. Avoid writing phrases like, "I am super intelligent" or "I can do that job with my eyes closed." Instead, talk about your achievements in college, the degrees you have earned, your overall GPA, scholarships earned or awards received. Also talk about clubs in which you have been involved in college, which will also demonstrate your ability to balance work and play. Discuss a time you demonstrated a leadership role in a project, another job or internship. Practice brevity. Since a recommendation letter is typically one page in length, there is no need to write pages about every little accomplishment, especially if it is irrelevant to the position for which you are applying. Instead, focus on three or four of your biggest academic or career accomplishments. These might include graduating valedictorian or salutatorian, having been previously accepted into another major university or interning at a highly respected organization.