Welcome to Fiverr Community Forum!
You can follow under below:
USE 3 Gig image, 2 PDF’s & offline image SEO.
Use 5 SEARCH TAGS in your gig (SEARCH TAGS helpful for RANK your Gig)
Per day Send 10 buyer requests properly.
Active ONLINE more time.
SHARE your gigs on social sites.
Visit FIVERR related group & follow others freelancer
Develop your SKILL in your category
Learn more about Fiverr.
Take a free Fiverr course.
I hope you got a lot of orders in the fiverr. Good luck for you