How do you promote Fiverr Gigs and how to make my gig visible in Fiverr search?

I’ve been a member for a long time, but I only started selling on 7 February, and I’m just coming up on my one-month anniversary. In my first 18 days I created several gigs, made some sales, and earned my level 1 badge. I didn’t know my way around Fiverr when I started, but by combing the forums and really paying attention to what made other sellers successful, I feel like I managed to stand out in a very crowded category. This is what I learned, and I’m sharing it here because it would have saved me a lot of time if I saw it a month ago.