Usually when I’ve seen hunter/English folks in showmanship, they show their horses in bridles. That’s how we did it when I showed hunter showmanship a few times, and how the folks on the open circuit where I show now do it. Western folks do the halters with the chains from the leads run under the chin. I always preferred doing showmanship in western attire and tack because the horses seem to “get it” better with a halter and chain than a bridle when working on things like squaring up and pivots. At least mine did/do.
Confidence is definitely key. Some people (and horses) are just awesome at it, and if they happen to go before you, it can be intimidating. Might not be the case at a local open show where everyone is just having fun and learning though. I showed showmanship at AQHA shows and a very tough/huge open circuit years ago and I don’t think I ever had enough confidence even though I practiced my butt off at home and my horse was pretty awesome. I won ONE class out of all those I entered, and I felt like I had just won the lottery because of my love-hate relationship with showmanship. It is a perfectionist’s dream class, one that demands total focus, attention to detail, practice, and poise. It’s one of those classes that you can always strive to improve in. It’s hard, competitive, challenging, and when it all comes together…pretty fun.
Clean the horse like you’ve never cleaned one before. Clip him really well, including ears and legs, make sure his tail is washed, conditioned, and tangle-free, polish his hooves, slick him up with show sheen of some kind so he is soft and shiny, and wipe a little baby oil over his eyes and muzzle to make his face pretty. As for his mane, do whatever is neatest. If you’re good at braiding, and going to show him turned out as a hunter, do that. If you’re not good at braiding, but think you can band better, do that (even if you’re doing hunter turn-out). Neat bands are better than sloppy braids. If you’re not good at either, and your horse’s mane is fairly tame, just neaten it up a little with a pull or trim, maybe put a slinky on to help it lay flat, and let him go natural. At open shows you’ll see everything from horses turned out to AQHA breed show standards to backyard ponies that haven’t seen a set of clippers in their lives. Turn-out is part of showmanship though, so do the best you can manage.
Practice the usual elements, make up patterns at home, get a helper to “judge” you so that you can practice the quarters. Every day do a few minutes of setting up, backing, trotting off, stopping, and pivoting. And don’t be afraid to have high expectations that your horse must meet. Obviously be patient if teaching him the elements, but he’s got to know that practicing showmanship is business/work, not play. A lot of horses don’t equate being led around with “work”, but showmanship takes a good bit of effort, attentiveness, and manners from the horses. It’s not physically hard for them, but it should really get their brains engaged.
Dangit. Now I want to go out and practice with my horse!