Going Western After Three Years of English

We don't own any Western tack. Ohio Rocks/Buddy hasn't been ridden Western in over three years. We asked our friend, Cody (high school student), if she would ride him Western. She's never been on him before but hopped up on him at the schooling show and demonstrated what he could do as an out-of-practice (possibly confused) Western horse. Pay no attention to the announcements as they are for a class that's in the ring, not what our horse is doing.