^ On that note, this paid request has one excellent review - this is how to positively review a job well done right here -
https://vborg.vbsupport.ru/showthread.php?t=308169
Now if you had a bad experience you can still leave feedback but it must be short+simple i.e.
"Codername took on the job, it was not completed (at all OR on time) and we parted on (good/bad/decent) terms. I'm still looking etc etc"
We do not want to see "This guy ripped me off, what a scam/cheat/hypocrite and I have the chat logs to prove it" or anything of that nature so basically you must behave and act professional when providing feedback

.