Although it was my first time to do that job, the responses from my colleagues were quite favorable.
I received good responses from my colleagues regarding my first attempt with the new task.
ご質問ありがとうございます。
① "Although it was my first time to do that job"＝「その仕事をするのは初めてであったが」
"the responses from my colleagues were quite favorable. "＝「同僚たちからの反応はかなり好意的だった。」
② "I received good responses from my colleagues"＝「私は同僚から良い反応を受けた」
"regarding my first attempt with the new task."＝「初めて試した作業に関して。」
ご参考に！
アメリカ合衆国 
