Hi there I been trick training my mini for two years and never been able to train her how to fully roll all the way ..if u want to train a mini to lay down, put her at a bow and put pressure on the opposite side near her stomach then u would be more likely to be happy with ur result..Once u got her to lie down u can teach her how to sit..for sitting put her at a lie down slowly push her head back as if u where wanting her to have a dressage neck lol leaving her with no options but to sit
then reward her.For the pedestal, I grabbed one of her legs put it on it and put pressure on her halter making her go up just keep rewarding them eventually they will get it
.. also rearing. .my mare never ever wanted to rear cause to her it wqs dangerous aha so I lifted one leg up as hight as it can and she reared with time
or tie a rope around her leg bend it as u where cleaning her hoof then pull on the rope and she will rear
my mini knows sit,lie down,kiss,say yes,rear, walk on her hind legs,bow,smile,shake a hoof and walk on a pedestal
lemme know if u have more questions