I made this diorama last week. Some of you may recognize the images from my 2012 sketchbook project sketchbook - treehouse.
the diorama is built up in three layers at a depth of seperation of about 0,8 cm between each layer. The frame is an adjusted IKEA frame 'Ribba' with an image area of 13x18 cm. I removed the frame's points and put in new ones to allow for the depth of the diorama (points - those flexible metal tabs used to fix the back panel onto the frame).
video of my 2012 sketchbook project contribution - treehouse