I got back from a two week holiday on Monday and started work on a new commission.
The yellow recipe was painted with an airbrush using:
GW "Golden Yellow" (GY)
GY + VMC "Light Yellow" (LY) 2:1
GY + LY 1:1
This was shaded with a glaze of GW "Dark Flesh" generously thinned and likewise applied with the airbrush. Preshading was done with a mix of black and GW "Dark Green" with just a tiny touch of the latter.
Photos were taken in natural, diffused light. Lack of shadows in the backgrounds gives an idea of how the shading/highlighting actually turned out. The last two images do a good job of showing the more subtle transitions.
Decals and the engine are next - weathering will come later.