This is a file from SVG Attic, and the box is BIG! It used 2 12x12 pieces of paper, connected to an octagon base. It'll hold a lot of Valentine chocolates for my special someone, let me tell you!
The cranberry cardstock is Close To My Heart. The designer paper is American Crafts, "XOXO".
Here's a better view at the top of the box, how it makes a heart, and the hearts make a flower: