This is hard to earn a regular income from any online marketplace, Because earnings depends on your sales basis. But still you can fix your targets to earn a smart income from online.
All you have to do is- Fix your target and work for it.
If you want to earn $100 a month you have to complete 20 orders if your average selling price is $5 only. This is important to focus for 20 orders in a month. First focus on your orders and check that you are getting enough sales or not.
How to reach your target?
=> Do advertisements of your gigs. Post your gigs to social medias and facebook groups. Facebook groups are great source for visitors. I used to promote gigs in the Facebook Fiverr Niche related groups too. paid advertisements also gives impressive results.