Always start by making your parts. This helps to make sure your lines are straight and you don't pull your little girls hair. It also makes french braiding easier.
We so a far side part. I started by french braiding one side and then finish with the other side as show below.
Left side of her hair
After the braids are complete pull them towards the back of her hair. Secure with an elastic.
This is very simple and yet such a cute hairstyle.