When I first started drawing i never new how to draw braids. I started to study braids and realized in most braids there is a zig zag pattern going threw it. Hope this helps!
Step 1: The Zig Zag
Start a large zig zag pattern and make it smaller as it comes down
Draw two lines on each side. Draw them about how thick you want the braid to be.
Finish by drawing to the edge line and back add detail as needed