I want to promote my gig here on fiverr, and ask for suggestions to improve it.
Read the Forum Rules and the Guide to know the best places to ask and promote, while avoiding getting flagged. Also, spend time reading other posts to avoid asking questions that have been repeatedly answered.
You can advertise and put a link to your gig in the category My Fiverr Gigs.
You can ask for help to improve your gig and put a link in the category Improve My Gig.
Also, read the forum rules as advised.
Make sure you’re careful about doing it.
No real way to promote it within FIverr. Plenty of outside ways.