I have never seen it done your way where you sew back through every completed. It sems like more work, but it would make a sturdier piece. Here is an animated video the way I do it, if anyone is interested: m.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-VYwfNDg0Wzg.html
I have no idea what you did at the beginning of your first row because your hands are out of the camera completely. It seems like the very beginning is an extremely important thing to do correctly and it is not visible to your viewers.