Here we go again,

As you might notice in the next image I tried to go for a bit more complicated attachment. If you look at the image you´ll notice the patches might line up -since they were created taking that into account-, spans are the same, so I tried this approach. I extracted key Isoparms, on both the leg and the foot, and attached them by using the Attach Surfaces action -blend option on-.
As you might notice it looks like a clean attach, however as per the rest of the patches I don´t have the slighlest clue about how I might work it out.
Don´t worry about the sole, I´ll mind that one later.

How would you work out this attachment?