Echo Rap song help

Well im making a remix to ‘its nothing by wiz khalifa’ in the song it has and echo at the background which i cant figure out how to do someone help please.
http://www.youtube.com/watch?v=T01YU7Vg5FQ

Example: cause my swawg is retarded retarded

Make a duplicate of your vocal track and shift it to the right a bit using the Time Shift Tool.
You will need to reduce the level of the duplicate track and you may want to Eq (Equalization) it differently from the main vocal.

https://www.youtube.com/watch?v=F3lznBY3J8w#t=24s

the echo on “date” is either warped ( like a tape/ vinyl record slowing ) … https://forum.audacityteam.org/t/moment-4-life-censor/18514/1
or pitch shifted without changing tempo.