What is the first thing a client pays attention to on upwork?

Question

Freelance

I would like to know from your experience and notes what the client pays the most attention to when choosing a candidate for a job

Answer 1

To his feedback

Answer 2

How?
If most of the performers are here?
How do they know for sure, even if they were chosen.
Those who are customers here are not typical Upwork customers.

Answer 3

Rate and reviews

Answer 4

If you answer the question literally - first of all, the customer looks at the avatar.
And if, in fact, the highest chances appear if you show in the cover letter that you understand the customer’s tasks better than he does.