Use the sample format as style guides. It's a good idea to have a handwritten note to the person in charge. It makes it more personalized. If you're promoting a person use an action shot that shows the person's face. A studio-type shot with the product or person against a solid color background.
Product samples are great, but still include a camera-ready graphic.
Don't expect the publication to take a photo of it. Know the deadlines. Know the name of the person who's responsible for gathering news about the subject you're promoting at the time. It may be the Sports Desk, Community Calendar, Business, etc. After you've found the right person, invite them to your event or to come take a free lesson.