Then I put some hot glue around the top edge, and pressed the 'lid' (another pre-cut heart) onto the hot glue. You have to work quickly or the hot glue will cool too much and not stick. I find the 'high-temp' glue works so much better than the low-temp, but my girls were helping with this, so we used the low-temp glue gun, and it seemed to hold just fine.
To finish the edge, where the cardboard was showing, I used a glue stick, and strips of metallic paper, My girls embellished the tops of the candy box with some cute stickers! WOW! Soooo easy, and Julie can't wait for her friends to come over on Valentine's Day to share this special gift!
If you want to place some mini-puffballs inside you could fill the box with candy too!