That is very kind of you Julián.

My games room should be finished tomorrow.
I just got the game board lipped today, so I will have time to start on those Island forts at last.
As for the grey or stone type walls, you can always mix a bit of fine modelling sand or textured material with your paint. That gives a fine pitted surface to the model. Dry brushing over it then highlights the irregularities.
Rob.