Hanoverian 3 yr old inspections- what to expect/how to train?

I took my 4yr old Hanoverian to an inspection so I know the basics. It is best if they are polite and well mannered, they should move freely both free and inhand. No barging in front of you at the trot, it you're hauling on them it restricts their movement and won't show them off to their best. They don't need to stand like a halter horse necessarily. We were told just to be able to halt them with the hind legs staggered a bit so you can see both legs, and front ones square or just staggered a bit as well. Just be able to adjust them at the halt as necessary but they shouldn't square up all the way.