StpbystpInstrctns4HairxtnsnsNeeded

I want to sew my old hair extentions into my boyfriends hair. The extensions are real human hair in GREAT condition. They are still on the wefts. I have about 3-4 wefts. I am not and never have been a hair styl ist however, I am very artistic & good with intricate things with my hands. I have never watched how they were sewn into my head when I had them. (I had 2 rows. One sewn about in at about the middle of the back of my head & the other weft sewn in about an inch above the first one.) Can someone PLEASE Privately E Mail me some Step-By-Step instructions on how to sew 2 rows onto the back of my boyfriend's head? What kind of thread do I use? What kind of needle? What about the braided horizantal base that the wefts and his own hair are sewn into? Where or how do I get that? Can I make it? Where do I start? What kind of stitch do I use? I would be GRATEFUL if I could get a complete Step-By-Step explanation about this.

THANKS in advance!!