Wow.
I thought all colored people can braid. Lol. Jk
When I was little I practiced on my dolls, then all my younger relatives, then my older relatives... By the time I got to myself, there's no braid I feel like I can't master. But now I'm inclined to find challenging braids, like 5 and 7 strand ones or braids that incorporate some kind of design.
All that is to say, as simple as it might sound, have y'all tried practicing with yarn? On dolls? On willing little kids? Once you get it, I think it's like muscle memory or something. I know myself, and a lot of people I know, can do their box braids and cornrows (even with interesting parts) without a mirror. You'll get to the point where you can visualize how the back of your head looks just by touching.
More complicated styles, I learned easiest by looking at diagrams. This lady has good ones with colored yarn **must see**:
http://www.chocolatehairvanillacare.com/2011/03/how-to-cornrow.html?m=1
Simpler styles I learned by doing/watching. YouTube has some pretty great teachers IMO. Let me know if you'd like some recommendations.
This girl's tutorials for braids I really like and find I get some pretty results on my super coily hair:
http://www.youtube.com/watch?v=vZDcumJa7-0&feature=youtube_gdata_player
TBH, I prefer watching straight haired tutorials. A mass of curls, or super thick wavy hair, can be kind of distracting. It's easier for me to comprehend which strand goes where when the hair resembles yarn, for some reason. Maybe because I crochet and knit? *shrug*
HTH!
via LHCF App