if you think which is more easy and not too much competitor? i would suggest go for it Email Marketing. It's easy to learn and easy to rank. Don't hesitation, don't listen what people say just go for it. I told you from my experience.
Always remember that never ever change anything in Gig when gig is in rank. Don't care anything what people says. If you can when you have 8/10 order in queue it's perfect time for it.
from your chrome browser you have to create incognito website and go fiverr.com then searach the keyword you provide in help then you get so many keyword in search bar. After search you will find so many gig then see every profile details with tag. After research atleast 20 gig i hope you will be arrange title and tag better.