Begin sending your portfolio to local (or national) magazines. Send them a short E-mail with an attachment or a link to your portfolio, with your name, address, and phone number. Send out three or four of these E-mails every day until you get some responses. Don't be too persistent, or else you'll come off as desperate and annoying. Follow up in a timely fashion, give it a week or two. If you don't get any responses, keep trying and keep building your portfolio. Even if you don't get a reply to every E-mail, a select few might land you around $1,000 a shot. Keep this up, and you'll have your pictures in a magazine in no time!