I started off by painting the box an off white color. I stenciled Paris on all three sides and put a monogram P at the very top. I didn't like the stamp pad that came with the kit because it was a black pad so I dabbed a tiny bit of gray paint on the stencil and experimented with various methods to transfer the stamp to the box. My best effort was applying the paint and blowing on the stamp to dry the paint just enough and then stamping and holding it firm in one spot. That seemed to solve the smearing problem I started out with.
I then applied some gold Rub and Buff on the little beaded edges to give it a contrast and I did a little bit of shading on the P and the Paris stencils. I then sanded it back and some of the paint came off and revealed the original green underneath. Now it looks like an old letter box.