"How else can i get more exposure?"
My suggestions: Commission promotional materials (well designed with high production quality) & strategically mail them out to the people/companies whom you want as clients.
While a link to an online portfolio is convenient, it can only sit in the email inbox. A tactile, physical representation of yourself in someone's hands is quite a different thing.
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Not sure if you are aware of FreelanceSwitch, but it has a load of useful resources.
101 Ideas to Get More Freelance Work and Generate New Client Leads
http://freelanceswitch.com/finding/101-ideas-to-get-more-freelance-work-and-generate-new-client-leads/
12 Practical Ways for Freelance Designers to Increase Leads
http://freelanceswitch.com/finding/practical-ways-for-freelance-designers-to-increase-leads/