The most important thing is your gig image. Research on it and create a eye cache gig image. Firstly it will attract buyer attention.
Keyword is most important thing. Research for keyword. Describe which you're offering & Why choosing you? Then Select your service price. Make sure it should reasonable price for buyer. When you get more and more orders then you can change the price.
Keyword filled description, you can go through similar gigs of yours to get an idea
Promote, Promote and Promote, especially Facebook, Twitter,uTube and other social media platform.