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In addition to Jose response, good old Blogger outreach. Come up with a gameplan focused on what subject matter, keywords & DAs you're after, them either you approach the bloggers yourself, or you pay a 3rd party to procure the links for you. The later is the most common approach as link building can be very timeconsuming. As with most thing SEO, Moz has an article on this matter https://moz.com/blog/blogger-outreach-for-your-clients. Also, if you have a Moz Pro account & campaigns set up & running then there is the Opportunities feature accessible via the campi=aign dashboard.