1.Get a box, preferably square and is sturdy!
2.Cut squares out of the top, left, and right sides. Leave a 2.5 centimeter (1in.) border around it.
3.Get about 3ft. of light meshy white fabric and cover the sides you cut out.
4.Cut white foam board to fit inside of the box, there will be a small crease but it really isn't noticeable.
5.Get a nice light or lamp and light over the top of the box, the fabric acts as a filter, evening the light out.
Here are the pictures I got with my new light box:
A very important part of this project: the light. I didn't say but I used a flexible desk lamp that works great!