Go on free lance websites like odesk or getafreelance. For me I recommend ODesk.com because there are lots of employers out there as well as more providers so you must build a unique and attractive profile so that you can get a job there.
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Google search is a great place along with many other webmaster forums. Almost all webmaster forums have a place for people to advertise help they are looking for
Getafreelancer and odesk are both good. You could try limeexchange as well. Or you could just simply google it away and search for a list of freelance sites. If you're serious then do your homework.. =)