I used a Gummiapan collage numbers stamp from Swedish House Crafts then ran the card through a brick embossing folder. I then lightly inked with distress oxides to bring out the brick work. I used a Gummiapan Anniversary Numbers die set for the 18. It does not have an 18 but I used a combination of the 10 and 80.
I finished by using a Visible Image splatter stamp in red and blue memento ink to grunge it up a bit.