That's one thing I want to teach mr Brego is to bow. I know how to do it I just never get around to actually doing it.
Angelhorse- it's pretty much like training your average dog... except when you're teaching them you can't make them lay down like you can a dog. For bowing you start with a treat and get them to put their head between their knees, then you start getting them to go down farther and reach for the treat more while picking up their leg, eventually they'll become used to stretching out with that leg up and will be bowing. It's hard to explain easier to show. Lots of treats and take it slowly. Reward any step in the right direction.
After bowing you can move on to lay down.
My boy is just growing up. He knows what he needs to for his age and does his jobs well (letting me toss things all over him, leading, loading, moving away from pressure, saddling, following me, etc).
You have a cute horse by the way!