I taught my first pony to bow and it was not all that difficult. (he had a halter and leadrope on the whole time)
-pick up one of the front feet (like your going to pick it)
-put a treat in between her knees. (her foot still in your hands)
-when she goes to grab the treat, pull back on her rope, as if backing her up.
-she might (not might-WILL) try to put down her foot so she can back up to get the treat.
-three angles: treat between knees, foot in the air, and back it up.
-with a good, strong grip and lots of practice, she could quite possibly learn to bow in a day.
GOOD LUCK !!!
He carried me away from all my fears, and his mane was there to wipe my tears. -RIP Vegas, my best friend.