What do you want to know? What are you braiding for? I can do professional braids of any style, so where are you having trouble and I can tell you how to braid YOUR horse perfectly, or how I would atleast! ;)
You don't need a needle and thread for hunter braids. Just yarn. :)
There's really good step by step instructions here. (When you braid DO NOT use blue yarn like in the pictures! I think they just used it to make it easier to see. Match it exactly to the horses mane).