here's my finished box - i dabbed a stucco-ish texture on the sides, then added a curvy scraped pattern to the top with a paint scraper tool. after that was dry, i stamped it heavily and randomly with dark purple ink. i used a dahlia shaped stamp and overlapped it all messy-like. i used a marker to line the edge all around the lid to finish it off. then i adhered some cute ribbon and a giant button and done! click on the pics to see them larger for more detail.
here's a link to another pretty indie file box i made a couple years ago - turned out nice, looks like a black lacquered finish.