It's really got to be though a personal relationship. Talk to friends and acquaintances and mention you're interested, and try and get either a gig directly or referrals. I don't really believe anyone hires at market prices from any websites or ads they encounter. Otoh, there are lots of people who need freelancers for stuff, so it's really a question of being out there and already having some kind of legitimacy established in potential employers minds when a job comes up.

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