Okay. There are a few things that can be improved with your post, but it appears that your question is off-topic for this forum (you might get answers, but probably downvotes). (Also, we don't know when your birthday or which you are referring to, so was it 1 day ago? a month? 15 months?) Your title makes it seem that we're supposed to write your letter, which honestly you can do better by yourself. — Jason Kim 1 min ago