I have 25 years experience as a graphic design artist, I hire artists on fiver because I’m busy and need quick work done for my websites or businesses.
A practice I hate: Artists embedding your work in logos or special effects, then holding it hostage till you give them a 5 star rating, or lying, or ignoring you, or plagiarizing others.
It is very poor business practice to do this. Then they beg you for 5 star rating. I will not give a 5 Star rating when I get poor customer service, get ignored, or try to get bullied into saying things that are not true.
If an artists desires 5 star rating: give a 5 Star performance and provide what the customer asks for. Not only do I give good ratings for good service, but I tip very well when they do what I ask. When they give poor service, I do not tip and rate them poorly.
Don’t let people pressure you to rate them 5 star if they give you poor service- otherwise other customers get burned.