Whatever your working history, just make sure that your resume is neat and professional. If you need help, go to a resume service or check your local bookstore for books with examples of proper format. Modeling or acting experience is something you absolutely do not want to leave out. It is not recommended that you deluge contacts with seven different pictures, two resumes and several cards. If you are represented by an agent, your agent should have kits that they will send out.
Papers fall to the floor, get lost, torn in shipping, any number of horrible fates.
A nice folder costs less than a dollar, so make the investment. And your picture should be the first thing they see. Your picture on the right, your letter on the left, however the folder is arranged. When writing the letter, try to use the contact's name where possible as it shows that you have done your research and know what market you're targeting. Its only drawback was that I wasn't the model.