If you're a newbie trying to stand out among the competition, then investing on your ow promotion is a must.
Your gig is basically a landing page and, as with any LP, you must persuade your leads into giving their hard earned money to you.
By writing an irresistible offer and shinning out with some flashy imagery, you will catch some of the finest leads Fiverr has to offer.
That's how I've jumped from zero to hero within a month there, within a obscenely competitive niche at that.
And I've done all the work by myself.
Take your time with it. Fiverr can become a gold mine if you understand its inner workings.
TL;DR: Treat your gig page as a landing page. That's what it is. Copywriting and design will get you attention; good work and customer support will keep them coming.
Good luck!