I am a graphic designer, Can anyone tell me where i can find clients who need graphic design work, Please help.
You can advertise your services in various places, but not here. You could also check out the SitePoint Marketplace.
There are lots of sites where people post jobs, such as at 99designs.
You should get yourself registered in the various Freelancing Networks and start pitching on clients.
Also want to add you should probably consider a portfolio that will be available right away for potential clients. No one will hire a designer without seeing a portfolio. Just doesn't happen at all.