Hey ya! Hopefully you have got what is plagiarism and it is a crime in writing to steal other people's content without giving credit. And I believe with the completion of this achievement you must have learned the sourcing and citing method.

Please add this remark at the end of your achievement as mentioned by cryptokannon.

please put remarks,
"I have read and understood the Steemit Etiquette on Steemit Community and will do my best to embrace them"

You can visit this guide by @cryptokannon Achievement 3 : Content Etiquette