Like all babies our two year Appaloosa filly is fidgety when we try to get her to stand still. She always want to be on the move. We have tried lunging her (until I am exhausted or dizzy or both) and leaving her tied but she paws if she is tied now *sigh*. We tried backing her up everytime she moves without a cue for about a month with no change either. We are attempting to get her ready for the halter classes. When we walk and stop she will square and she pivots but the standing still is our issue. She is spoiled but not pushy. We correct her and scold her and ask again..The longest she has stood still is about 90 seconds and we reward her with treats when she stands longer than 60 seconds.
Any ideas?

I do halter with all my youngsters too even stallions. First lose the treats. Next Appys are extremely curious but more important SMART. It shouldn't take long to teach her to stand. Check your body position while she is on the lead stand up straight. The more upright and puffed in the chest the more respect you'll get. Slump, hunched shoulders or looking down your horse will move around. Teach a word I use "stand or stand up" and can have them stop mid pasture and wait. Next decide where you want her, stand her up tell her stand and then either use your show stance or hang out doesn't matter[start in show stance] I use a chain over nose,but its not neccesary. When she moves a small jerk and put her feet EXACTLY where they were. The feet is what you are working with, stopping the treats will stop her pushiness and creeping. Wait 15 seconds move off any direction start over, increase your time length. Multiple training sessions will work better than one long one. Turning out/ in great training time. Good luck

I have to agree with Lt STOP with the treats, Horses are smart and when you start using treats they figure out what they need to do to get them, She will become mouthy and pushy. It is just time and working with her. I am a firm believer that a horse needs to stand tied (tie them comfortably). I don't care if they dig a 8 foot hole. It teaches them patience. I will let mine stand tied in their stalls or out at the fence, or by the trailer for an hour or more when I am working outside. I had a filly that I showed halter when she was young and she had a problem standing still when we were in the show ring. So i started tying her everywhere. At first she would paw and dig big holes, I just made sure where ever she was tied she couldn't hurt herself. It took time but by teaching her to stand tied quietly and then working with her and using a key word she finally got to the point that when we took her to the show ring that she would stand there quietly and sometimes fall asleep. It is time and patients and no treats.

Good luck