I did 13 cornrows going back and secured ends with black silky yarn (afraid to use weaving thread) and two packs of Freetress water wave braid in #2
http://www.snghair.com/Product/Detail/74/WATER-WAVE-BULK-22-inch
Sorry for the delayed response couldn't remember the hair type so had to look it up online. Yes I cut the hair in half to install and then cut it an angle when I was finished. I braided my hair back then braid the all the braids together, tucked and secured ends back up to a side braid with yarn. Then to further secure I did several crochet braids over my hair ends. It's kind of bulky in back but you can't tell because I used less hair in the back.
Hi all! My hair was starting to suffer from swimming and cold Michigan winter so I decided to try crochet braids. I think they turned out pretty good for my first attempt....
Here's a close up front closure and the back: