If I wanted to work for free, I'd choose to be a volunteer not a freelancer. Learn the difference already. If you're a freelance professional, don't settle for not getting paid - if you didn't want to get paid, you'd be a volunteer, not a freelancer!
No matter how balanced and beautiful a layout is and how perfect the color choices turn out, a design can still be completely defiled with inferior typography. Useful tips for laying out good typography from the lead designer at Design Aglow.