Start this like a regular braid, but drop the top piece through to the bottom and leave it there. Gently twist the 2 pieces you’re left with upward. Add a new 3rd piece in between + drop it through. Twist again and repeat. Keep going until you get to the back. Tie it with a clear elastic, tuck the end under, and secure with a bobbypin.
I love the fishtail braid. It is one of the simpler braids to do, and I learned a neat trick for girls with layers (like me!). All you have to do is twist the pieces as you braid to keep the pieces from sticking out as you work in your shorter layers :)