To recreate this effect, keep the following considerations in mind:
Use different opacities of suspended materials to control surface brightness and vary the ratio of direct to indirect illumination.
Layer the suspended decorative elements to mimic the look of clouds in the sky.
Test different variations of light intensity and reflected light to render the luminous shapes and achieve the desired effect.
Select suitably rated translucent panels or tensile membrane fabrics to create the floating luminous shapes and surfaces.