Making the 2D space into a 3D space

From the traces of the drawings which came from Southbank. This is how I plan to remake the areas that I filmed. I have simply drawn a grid which is at the base of the box, then i have drawn a straight-line down from every light point until it meets the grid. This is the way i plan to build the model. I will make a test model and then I will make another drawing of the final space, which I plan will be an arrangement of the spaces combined.