I am not trying to be offensive, I know that bad habits can be very hard to get rid of, but I just wanted to know what bad habit just really sets you off. For me, it's "puppy paws"/"piano hands." It seems that so many younger riders at shows have that habit, and it just bugs me for some reason. It also bothers me when riders have their hands by their faces and pull at their horses around the whole course and over the jumps. Later you see the rider surprised when the horse refuses to jump or jumps awkwardly and sends the rider onto the horse's neck.
Short rant over.