A small fish a can also upvote Qurators posts for Tier 1 and Tier 2.
I see you are already on T2 as a new member (this is free for 30 days). You can add up the upvotes to get T3 and T4.
Or you can subscribe with a monthly fee also for T1 or T2.
Please check this posts with the explanations and options.
https://steemit.com/qurator/@qurator/qurator-tier-changes