Things You'll Need
Instructions
Place the cardboard box on its side, with the open side facing you.
Reinforce the closed end with tape to provide stability.
Using scissors, cut large squares from the top and two sides of the box. Leave enough cardboard at the corners so the box can stand on its own.
Tape pieces of tissue or tracing paper over the holes on the top and sides of the box.
Place a piece of poster board (white is typically used) inside the box, allowing it to curve from the top of the box to the front. This will create your seamless background.
Place your light source on the outside of the box so it shines through the paper window.
Experiment with the placement of the light source to get the effect you want.