
With my Twisted buttonhole bag I add cabling to the middle of each side, as you can see in the pictures in the last post. When I got to the point where I was supposed to cast off for the handle I put the stitches on holders. First I worked on the strap by continuing the cabling, working until I felt the length was good and did a 3 needle bind off (I kind of messed up and didn't match the cabling exactly, but I'm not that anal about those things so I left it).
When the strap was finished, I started work on the large flap. I made a buttonhole (I think it was 6 stitches) on the first row of the large flap right in the center that the smaller flap on the other side could pass through. Worked the flap incorporating some cabling and 2 buttonholes and ended it with a few rows of garter. On the other side I did the opposite of the large flap and bound off all the stitches except a few in the center (again, I think it was 6 but you can make it as thick as you want as long as you make the buttonhole the same amount of stitches). I worked another small cable, a buttonhole, and again ended in garter. Here is a picture of the top of the bag:

