Hey ladies! I plan on putting in box braids by myself but im having a hard time figuring out how to cut the hair to get the right length. Before I would cut the jumbo braids hair in half but that gave me mid back length hair. i want it to be a little longer than shoulder length like this http://www.stylesbyalexis.com/wp-content/uploads/2011/01/Box-Braids.jpg how will i have to cut the braids to get that length? In three?