Add a special touch to your cards by including a heartfelt message to your recipients. If you're short on time, a simple yet sweet message like "Thinking of you this holiday season!" or a sweet holiday saying will do the trick. If you'd like to go a little farther, a family newsletter to keep relatives and friends up to date with what has happened since you last spoke can be fun. In either case, remember that the sentiment written inside your holiday card is as important as the photo.