Thanks everyone
The crosses are hand painted, but I can't really claim that the crosses were freehand, as I simply repainted over what was already there (a case of colouring inside the lines). Tbh, I'm not good enough to paint such as those freehand to such a good result, and didn't have any decals to use.
FK. I agree with you tbh. It was originally my intention to swap the propeller blades for plastic and paint on the 'movement'. I was also going to apply thread to the wings, etc., and use a Peter Pig metal pilot, but, tbh, there wasn't that much interest in the game at the time, with the group I played with, so I couldn't see the point in going to such lengths for something that was going to be not played with.