In my humble opinion, a good freelance web designer should:

• know his or her limitations
• determine his or her target market and focus on reaching that market
• know and implement current web standards in their work
• have a good working knowledge of graphic design, working with color schemes, and other programming languages such as PHP
• have a privacy policy on their website
• build interest and trust with site visitors by providing quality and fresh content and information about themselves
• maintain on-going relationships with clients and visitors
• offer reasonable fees for the quality and quantity of the required work

Anyone with some graphics and coding skills can call themselves a freelance web designer. But are they worthy? You be the judge.