May not sound much, but:
Wing and tailplane roots an wing light spaces filled, elevators attached, additional filling the fuselage/nose join. Was originally to dispense with the Comet undercarriage completely but on second thoughts have used the legs. the Undercarriage wells will have two side doors each rather than the single rearward-folding cover the Comet comes with. I will be using new wheels though.
Colour scheme decided upon a long tome ago - fictional but hopefully typical early 1950s.