Roof plug 4.

These wooden strips come in real handy for supporting the filler, and for roughly guiding the sanding to a uniformed finish.
Also, as can be seen, the roof will now blend into side wings Every effort is being made to curve most areas, so as , i think, to keep the shape of the plug, in keeping with the curves of the Spitfire.
Usally i finish a plug by spraying it with primer, this fills the tiny holes that usually are left, and helps to visualise the finished item.