I started just be drawing boxes in my Silhouette Design Studio Software. If you'd like the studio file, you're welcome to it, just contact me via my blog - My Card Party. The Silhouette is a digital die cut machine that cuts designs from paper. Please note that the images of the boxes and pieces are shrunk to 50% so I could fit them all in the picture. You can enlarge the images and cut by hand.
Cut each piece from white paper, with the exception of the mat (largest piece), which you will want to cut from black paper.
You can color the pieces any way you like, I used a sprayer to apply alcohol ink marker to some of it, other parts were distressed with Tsukineko dye inks, and some pieces have a little white paint on them to add lighter spots.