Hi, its basically showing both yourself and your horse/pony off from the ground.
Both well presented.
Some people wear Jodhpurs, Jackets, shirt, boots etc..
Some wear Dresses with a hat, or smart trousers etc
Your horse/pony all clean, healthy looking, Some people plait, some leave it natural.
Making your horse/pony square whilst standing, so the judge can check him/her over.
Showing off his/her paces, whilst leading..
Its good fun, you should give it a go. Is that what you are wanting to do?
Hope this helps a little.