About “building a relationship”: the relationship should be – based on my experience – between a brand and its subcontractor, defined through a contract (get mine on Amazon: https://www.amazon.com/dp/B084SP1R7G), where the Influencer is paid for her (hard) work. That means the “relationship” should be professional. All that remains is identifying the lucky, talented influencer.Related:
Search carefully and follow that person for a while before signing a contract, so you know what you’ll be getting. Good luck, it’s not that hard!
Should I become friends with the influencers I hire?
Working with Influencers: Moving Beyond “Outreach”
Signing a Brand-Influencer Agreement as Part of Your Influencer Marketing Strategy
SMI* = Social Media Influencers