There are two photos with the kit... both are different, but where they are alike is that it's symmetry all round; they are are the Play School house for those old enough to remember. Well that's 1. boring and 2. not very lifelike so I shuttled things around a bit.
The top windows are covered by roofing and guttering so are just a pair of saw cuts and a score and snap. The doorway ditto. The lower windows are marked out (all this at the rear BTW) drilled with a 2mm drill all round inside the line, cut out with a knife and filed back to the line(See Mr. Parker's article in the Hornby mag for photos of this). This took quite a while including filing a slot for all the mortar courses around the frames to lose the flat non-stone appearance.
The roof sections were a comparative doodle. One cut to get the size, then cut and snaps for the chimney gaps, and the edges (which you can't see here) sanded to a feather edge except the top which is 45deg-ish. The bottom edge was cut into on the slate joins and a couple of broken ones cut out to relive.