This letter offers your congrats to someone who has just won a competition or award.
1234, Main Street
Boston, MA 02123
07 April, 2005
<Recipient Address Goes Here>
I just heard about your triumph in the <name>, and wanted to congratulate you. You must be so thrilled! I know how hard you worked to prepare and how much you truly deserved this win. Isn't it wonderful when all our hard work pays off? I hope you'll be doing something special to celebrate this exciting victory.
Congratulations again. I wish you continuing success.
encl: <List of enclosed items goes here>