The Diorama is the following measures: 20" long x 14" Height x 10.80" deep.
I used foam covering everything with acrylic mass.
Paint was made as follows: first of all painted black and then used the technique drybrushing over black, with three different shades of gray. All paints were acrylic.
The floor was made with sand glued.
The webs were more difficult to make: I used nylon lines of 2 different thicknesses, fixed with metal staples and hot glue over much of the wires.