my language is spanish so i dont understand exactly what and how can i do to make a window of isomalt. I made the house not with gumpaste , i made it with pastillaje, i dont remenber how is it call in english, sorry. can you explain me better. thank you you are my best teacher. you really help me , i am alone learning all this techniques, it is too hard for me but i want to be better each day, i have all the elements to do it. thanks.
Pour a thin layer of Isomalt or Sugar into an oiled square cutter the a little bit bigger then the window opening in the pastillage.
Attach it to the inside of your wall with royal icing.
hope that helps.