Seen from above, the horse-shoe curve of the endclasp is reasonably straightforward; its just a matter of shaping it on the bending iron. But shaping the vertical plane is more complicated, because it has to keep twisting in order to accommodate the ever-changing vertical contours of the lute body. And just to complicate matters: where the bottom edge of the endclasp picks up the edge of each rib, I must smooth away the ridges.
Difficult, but not impossible. My next attempt, on the next lute, should be easier to navigate.