Hollow portrait : work in progress

In September, my grandmother is going to celebrate her 90th birthday. I want to do his hollow portrait. I saw her this summer, I offered to come and spend a few days with her this fall, and she liked the idea. I have already started taking some pictures: his house has changed since I was a child, when I spent my summer vacation there. Arrangements have been made to make it more secure, but overall the essentials have remained the same. Its atmosphere, above all. I would like to capture it.