Begin plotting panel 1 of the 1598 ‘pair of bodies’ onto your traced basic block pattern

23 through 17 to 15 connect with a shallow concave curve to create the new back armhole https://www.niso.org/standards/z39-96/ns/oasis-exchange/table"> 16 to 24 0.3cm on the CB line 24 to 18 connect with a very slight convex curve 3 to 25 1cm on the CB line 25 to 13 connect with a shallow concave curve 13 to 26 half measurement (13 to 15) 26 to 27 square across 0.6cm