Normally after spray painting an item, I would brush paint the final coats of paint to fill in any holes or gaps in the spray coats. However, because I want to model the Sturgeon A in a heavily weathered and slightly battered condition, I didn't bother with more black paint, instead going straight to the greys (Humbrol #66 and #79) and browns (Humbrol #29, so far) in washes and dry brushed streaks.

The initial results are shown in the next two photos.

While I should have added the transfers before weathering commenced, it doesn't matter too much with this build, as there are more layers of weathering to go on. This is the stage it is at at the time of typing this post. Still to do: more rust is needed on the metal parts (of the real thing - they are all plastic in the kit!), more shades of grey and brown for the insides and outsides of the wooden planked bits, and more weathering on the floor, before adding the rail load I have earmarked for this wagon.