Start by splitting the hair in half like you are going to do pigtails. Put one half of the hair in an elastic to keep out of the way. You are now working with half of the hair. Right in the middle, divide a section that looks like a circle with hair surrounding the outside of it. Sounds confusing - look at the picture below:
Now the hair that is left out of that pony tail, begin inside-out french braiding at the top of the part.
You want to circle around the pony tail that you made making sure not to include any of the pony (again only the hair on around the pony)
Once you get to the end, now connect the braid with pony tail.