I just applied for a job I really REALLY want and now I'm going back and looking over my cover letter and I can't find any flaws. Usually I go over it 209842 times before sending it and I go back later and still manage to find that I did something stupid like write the date as 2012 or add 1 too many 0s to the zip code because I get so obsessed with the content that I think my brain tries to self-sabotage in other ways.
I haven't found any errors on this one.
Must. Take. Deep. Breaths.