I bake with six braids each and every week, except when it is Chodesh Tishrei then, I make round ones. It is very easy to make 6 braids, and you get the hang of it. It becomes second nature.
I make the small rolls with 3 braids and then bend the ends down, so that it looks like a flower.
When I bake a very large simcha challah, I make 6 braids and then with half of the weight of the original 6 braided one, I make 3 braids on top. It looks beautiful.