Say Wut
In this hip-hop combination, arms come from the shoulders, not the hands. That is the first thing to work on, along with accurate, strong leg placement.
The routine is built on pop-like accents and side to side movement: pivots and snaps, a chest hit, elbows out and in, and a hip moving to one side. Footwork needs to land exactly where it should, and everything sits on the rhythm of the music.