What’s the biggest mistake freelancers make when pitching clients?

[Btaliat]

There are a lot of mistakes that freelancers do make while pitching clients. Regardless of the levels they are, they still don't themselves commit the same mistakes. Some of the mistakes include talking more about the job rather than talking about themselves. They praised themselves too much and find ways to justify the money that they want to collect rather than talking about the jobs. What do you think about this? Which other mistakes do you think they do make while pitching their clients?