Ok, I stole the lightbox how-to from here, but here's the rest:
Cut a hole in the box.
(har har har)
Honestly, I cut three holes in the box, put paper towels over the holes to diffuse the light I'll be adding. For the backlighting, I hung another sheet of paper towel on the inside of the back of the box. All I did then was aim all the lights at the background so the light would bounce and hit the back of the clementine.
I carved up the thing so there was a slice sticking up, but it would still stand up.
I took a really quick shot with my non-macro lens and this is what it ended up looking like. It's blurry and it ain't nearly as good as the earlier one, but you get the idea. My clementines are starting to get a little ragged too. I think I need to finish 'em off.
Next post will be the smoke walkthrough