When the time comes to write a bereavement note, many of us feel at a loss for words. Just remember that sincerity is the key. A few thoughtful sentiments are all that is required in an emotional situation.
To begin, choose the appropriate stationery, perhaps one of your more formal or understated pieces. Then, express your care and sympathy succinctly. Remember, your goal is to let them know you're thinking of them and you are sorry for their loss.