I started by making the lid, simply follow the sketch and cut and score where indicated, you should end up with something like this:
Cut the DP to size, I cut mine 0,5 cm (or 0.2") smaller than the cardstock panels
Right, time to make the box, just follow the pattern, cut and score where indicated, decorate four of the panels with DP (I folded the box the way I wanted it first, then marked the four panels that needed to be decorated with a pencil cross)
Now you have a box to go inside the lid. Put some double-sided tape or glue on the bottom of the box and glue it on the center panel of the lid. Mind the measurements, the center panel and the bottom of the box are not square!
When you've done all that, you should have a box that looks similar to this:
I've made the wrap from a 30,5 x 4 cm (12" x 1.6") strip of cardstock, wrapped it loosely around the box and the scored the lines. Decorate it with DP, add a lovely Sassy girl, some blooms and pearls and you're done :D!