An escrow is a trusted third party
You are the buyer AND the escrow in this case, that's not how an escrow is supposed to work. What if your seller (the translator) completes his/her job and you (the buyer) refuse to pay? Wil you (the escrow) be able to impartially judge and still pay the seller while you (the buyer) refused to do so?

Quickseller got shunned, red trusted, insulted,... because he was caught self-escrowing in the past. Don't repeat his mistake.