David,
Re British Caledonian I prefer the classic paint it flew with for most of the years (I flew many times in BC in DC-10)
http://www.airliners.net/photo/British-Caledonian-Airways/Boeing-707-373C/1832128/L/&sid=df7676ec944250106258e0d89340474a

You can see in the pic the letters font are smaller and stylish classic.

In the 80s they changed the font to larger letters but I think your paint is too large. In your paint the letter "B" goes up doubles the size of the door, when in fact it was just a bit higher than the door. The fonts being too large or different is the most difficult part in painting planes I guess..specially if they curve in the fuselage.

My wish would be for a classic Aerolineas Argentinas,
http://www.airliners.net/photo/Aerolineas-Argentinas/Boeing-707-387B/1144128/L/&sid=ec2cc07207d86d47002d8176f2052474

or the new
http://www.airliners.net/photo/Aerolineas-Argentinas/Boeing-707-387B/0953201/L/&sid=ec2cc07207d86d47002d8176f2052474

take care.
K