What are the most common mistakes Fiverr freelancers make?

[Btaliat]

When you ask the reasons why most clients don't really like making use of Fiverr for their freelancing services, it is because they believe that most freelancers on Fiverr always make the same mistakes. Among tbr mistakes include responding slow to messages. Others always over price. Some of them as well don't always meet up with the deadlines they promised. What other reasons can you think of that's preventing people from using Fiverr?