Thanks for the great comments suppose I have to deliver now so ...... to let you know I've started firstly on a mock up to see how things will go together and also to account for the 3D scaling side , I've started this off in 1:24 but already it shows some promise my intention would be to scale it up to 1:12. This is created from sheet polystyrene 2" thick then carved for the depth perception then coated in plaster, to this I will then add the odd solid extrusions i.e. ledges, plinths, major stonework and finish off with the intricate pieces and final finish. Some of the plaster is still wet hence the shine and the right hand side has been profiled awaiting final coating and finishing. It's fun so far ......... will let you know ..... also included a photo from the valley including my snapped clothes line sorry !!!