Narrow gauge diesel progress

I've made some progress with the Drewry bash diesel. I took the kit, chassis, some plasticard and some tools away with me at Christmas. However I forgot to take pack the glue so nothing got stuck together. I spent some time cutting and filing off moulded handrails and other details that I didn't want. I also had a bit more of a think about how the cab is going to look. My plan is to build a locomotive with two bonnets, as this will make the locomotive roughly the right length for the Bo-Bo chassis. The Drewry has only one bonnet and has larger windows at the back of the cab so I couldn't fit a second bonnet and keep use all parts of the cab. I considered cutting down the second bonnet so that it was lower than the windows, which would give the driver better visibility, however this wasn't the look I wanted and I couldn't see how I could do this with the Drewery bonnet sides. The only thing for it was to clone the cab front in plasicard. I started work but still haven't finished the windows yet. When I got back I glued the larger bonnet together and used some milliput on mounting hole for the horn and a couple of places where there are dents in the moulding. Next task is to finish the cab and then work out how to make the second bonnet end.