I have asked because those who have been working on Fiverr for a long time can add to our knowledge by explaining this question in detail and according to their experience😇..And also Because there are daily changes in Fiverr.
After completing a project🤩,clients can rate your service on a scale of 1 to 5 stars⭐ , with 5 or 4 being the highest rating . the average of all ratings determine your overall rating .
You should write it by yourself. yes, but you can take some idea from chatgpt. it will also increase your writting skills about your profile and description.
By optimize your gig title and discription ; As you should use relevant keywords in your gig title and discription to make it easier for clients ,to find your service through search.