Zebob. If I remember correctly the blinds are only piece of paper cut to size, then use pen & straight edge to make lines on it. glue it at the top and let it hang.
UP SD40-2 the side walk is gray foam sheets from AC Moore.
Miles the brick is just water base white paint thinned out . Spray wet water on wall and use small brush to pick up the very thin paint. Touch the brush to the wall and watch capillary action go.
Ralf yes it is florist foam.