I did freelance works for more than a year, and i might say that I have earned way more than my usual job...for sometimes. What i mean is that sometimes you'll have a lot,sometimes none at all. And Tommy here is right, its a tough decision on going freelance, big competition out there. Make a feasibilty study, research and dig up,see if there's a market for freelancers in your area. Dont rush up, you might end up regreting it.
...tommy, new avatar there, nice one.