Okay. Let's see.
I started in the back of my head. I cornrowed across, then cornrowed up and around to start the next cornrow above that one, sorta like a zig zag motion. I did this until my whole head was covered, leaving out a little bit of hair around the perimeter of my head, not a lot but enough to cover a cornrow. Then in the back, I started sewing on the weft. I didn't take the needle through the weft, I just stuck the needle under the cornrow and brought it around the weft and pulled. The hardest part is starting off the sewing because the weft doesn't attach correctly if you're not paying attention. I say you practice a few times first to develop a comfortable technique. It took me about 7 hours
to do, cornrowing and all, but then again, I'm just really slow. The time was worth it, because I kept it in for 3 weeks and didn't have to do anything to my own hair, except I gelled the edges down in the front every few times.
Oh yeah, be careful if you choose to use gel. When I took out the tracks, I noticed in the front where I was using a lot of gel that I had some build-up, reminiscent to that of the knots you get after taking out braids you've had in for a while. I managed to get the knots out, they weren't bad since I only had them in for 3 weeks. I didn't wash my hair the time I had them in either, because I didn't do the cornrows small enough and it would've been a waste of time because I couldn't shampoo in all the nooks and crannies.
So, do the cornrows small enough and have plenty of time to set aside for them. You don't want to rush yourself.
The hair I had was similar to this, except the curls got much smaller at the end, and the texture was more crimpy than corkskrewish. And the top part was dark brown and it got much lighter at the ends.
After a while, the hair started frizzing, but it looked really good with the frizz and much more natural. I got a lot of compliments.
http://www.cordiallyyours.net/hair_skin/usa/item2889.htm
Let me know what you decide to do.