[richsin]

Smaller businesses are easier to target and get the ball rolling. I started doing sites for as cheap as $500 just to be able to practice and build a portfolio.

Maybe there is a local business you like, build them out a site and show them. You get to sharpen your skills like wire framing and front end development. It's not sexy, but you learn a lot. What's great also is, you can use Twitter Bootstrap without being judged. Most of them could care less what you use.

Unsolicited Advice:

I started my first business at 16 and age should never come into the equation. Once you are looking to freelance, which is still running a business - you are judged as a businessman. No one gives you a break for being 16 nor should you give them a break. I am always impressed now at the age of 28 at how younger freelancers are unapologetic about their talent and age.