I made the background a while ago and if I remember correctly, I dry brushed white gesso onto black card, adding Eco Green Acrylic Paints and Distress Stains, some of it through sequin waste. As an easy alternative, try Crafter's Workshop Mini Punchinella, Crafter's Workshop Mini Chicken Wire, or That Special Touch Large Polka Dot Mask instead.
Using Cobalt Archival ink, I stamped images from PaperArtsy Vintage Ink & The Dog 02 and IndigoBlu Grand Tour III. I wiped them lightly with a damp baby wipe so they merged into the background.
On a separate sheet of paper, I stamped the girl from the same PaperArtsy set in Cobalt Archival ink and coloured the white areas with coloured pencils before cutting her out and gluing her to the background.
I sprayed Dylusions sprays through a Tim Holtz Idea-ology Compass Mask, cut it in half and glued it to the card.
Finally, I mounted my finished piece onto black card and then glued that to the card blank.