Freelance graphic designers should expect to make as much money as they do work. In essence, the time spent working is relative to income. This is because many graphic design professionals pay on a per-project basis or on a per-hour basis for a small number of hours.
The more seasoned and talented you are as a designer, the more people will pay for your services. Experienced designers can make good money, many times even earning themselves a position somewhere as an in-house designer on salary. Technology is always changing, and any good freelance design professional should be able to stay abreast of changing technologies so as to always be up to par with the expectations of their clients.
If you’re looking for a great job, consider a career in graphic design. If you have the talent and the desire to learn, you can end up with a great profession.