I repainted  the Concorde papercraft  by Ralph Currell and Erik te Groen in 1:144 scale, and then in 1:72 scale  and 1:102 scale  in the Braniff Airways livery.

Concorde was never painted in a Braniff Airwqays livery, although there were many artist impressions of what one would look like:

Here are a few sheets with repainted parts:

Download papercraft with instructions in 1:72 scale (A3 format) and in 1:102 scale (A4 format), in 1:144 scale here.