The depth of the guitar body usually is greater at the tail and less at the hell. Most contemporary guitars determine this taper as a section of an arc. Based upon my readings of the some documentation of Torres guitar, I believe that Torres tapered his guitars as a wedge shape and introduced the back doming in the back braces.

So that is what I am doing here. But how to establish the taper? I am using a panel of plywood cut to the outside shape of the guitar and blocked to the correct depth, which in this case is 96mm at the tail and 90mm at the heel

And a pencil line is transferred to the guitar side. The wood above the line will be trimmed away.

And done, ready to receive the back linings. The tuning machines visible are newly received Gotoh's and are set into the head to verify the fit.