First I find influencers using FollowerAudit’s detailed followers analytics feature, this feature can list most followed accounts, verified accounts, etc from your or any other public Twitter account.
You can find such popular and verified profiles from your or your competitor’s profile or from profiles with the same niche.
It will be much easier to find relevant influencers for your brand.
After finding the influencers I make sure I audit their accounts for fake followers (as there are many fake influencers who buy followers and can bring a huge loss in return)
When you audit that influencers account using FollowerAudit’s Fake followers checker feature, A report will be published informing how much percentage of their followers are active, inactive and fake. Along with the list of fake and inactive followers.