Best advice you can get is practice, practice, practice.
Originally Posted by EventingDeva
1 thing - don't leave the mane dirty to braid! People might say it's easier to braid a dirty mane, but it looks nasty! Get some QuickBraid, Mousse, or even water! It will help keep a grip on the hairs while you braid.
There is a huge difference between not clean and so filthy it looks bad.
A freshly shampooed mane is much more difficult to braid. That does not mean you leave your horse with dirt and dry skin flakes and use braiding as the excuse.