After two coats of Humbrol matt orange to begin the teaking process, I fitted the bogies. I'm using Hornby Gresley bogies for these, with the detail removed.

Then returning to the teaking process, a drybrushed coat of Humbrol satin mid-brown finishes the job.

At this point I tested the model on some track and found that each bogie needed a 5 gram weight fitting inside, and the body needed two 10 gram weights fitting inside the saloon just in board of the bogie pivots. This meant that the as-drawn interior couldn't be fitted.

So I built the seating out of balsa wood instead.

After a bit of experimenting I settled on this arrangement as being suitably robust, detailed enough to pass muster for me, and fitting over the weights in the body.