u/ithinkiamparanoid

I am considering hiring a storyboard artist (probably from Fiverr or Upwork), I'd like to know what should I pay more attention to?

Is it about the speed of the sketches or the details, accuracy? I am new to this and I would like guidance.

Also how many panels do you expect to have within a day? Coz I don't want to have unrealistic expectations.

Thank you.