First, I removed the stickers and price-tags from the box.

Then I sticked double-sided tape in the shape of a cross on the outer walls and the lid of the box (see pic). I think other types of glue might also work well.

Afterwards I rolled out some gift paper and put the box onto it. I cut a little more than the needed amount

and folded the rest over the edges with the help of transparent tape. The same procedure was used for the inside of the box and the lid.

After finishing this I measured the measurements of the inside of the box to divide the box into 15 shelves.

In order to do this I used 6 pieces of cardboard to divide the box. I added small cuts to fit them into each other. Those cardboard pieces were also wrapped with gift paper, though a different from the one which I used for the box itself.

I strenghtened the connection of those pieces to the box by adding some transparent tape and glueing them to the bottom of the box.

(Sorry I haven´t got any pics from the last three steps but I hope you understand my instructions)

Now it should be finished ^^ and look like this *g*