As far as some tips on writing the thank you note she goes on to advise: "Always address business envelopes with Mr. or Miss, Ms. or Mrs. for a woman, followed by the name of the company and address." When composing the letter, avoid gushing praise or another entire overview of your qualifications. You do not want to seem desperate for the job (even if you are) and you definitely do not want to come off as conceited or over overconfident. Companies do want people that are skilled in what they do but also humble enough to learn new ways of performing certain tasks. You need to come off as a leader but also a team player. If you are confident that you did your best during the interview, a short "I just wanted to thank you once again for considering me for the position. It was a pleasure meeting you and look forward to hearing back on if we will be working together in the near future." will suffice. If you did make a few blunders during the process, analyze if they really were serious enough that they should be acknowledged. You don't want to remind the interviewer of something that they had forgotten about. Yet again, this may be a company that values a "standup person who admits when they're wrong". If you properly researched the corporation beforehand and were well-tuned in to your interviewer, you can follow your gut instinct on this one. For example, instead of pointing out specifics, you can just simply state, "I also thank you for excusing my obvious nervousness."
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When it comes to following an interview with a thank you note, do not send any sort of gift as this may be interpreted the wrong way. No flowers, no candy, no chocolates. Most people have the common sense to not enclose money, but many do not think of these small trifles as "bribes". The majority of executives will view this as out-right coercion or at the very least a serious lack of judgment on your part, neither of which are desirable qualities in a potential employee.
