Thanks guys for your warm words
Alexandre, yes this roof is for the italian house,but I was thinking that a separate post for show this thecnique could be good. Most part of models that I have seen have these typical plain slates, but we can see other types and variations in the real world.
Bardley, Nico, this metod can be used for do architectural ornamentations also. I want show more of this style in the future
Jean-Bernard yes in next time I will push the perfection one inch more :-) and will do hollow tiles. this time , however, I must do solid tiles due that this is a original for a kit, in the future this tiles can be hollowed with a round lime...hope that soon I can show here the result.